mirror of
https://code.videolan.org/videolan/vlc
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670 lines
22 KiB
C
670 lines
22 KiB
C
/*****************************************************************************
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* zvbi.c : VBI and Teletext PES demux and decoder using libzvbi
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*****************************************************************************
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* Copyright (C) 2007, M2X
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* $Id$
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*
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* Authors: Derk-Jan Hartman <djhartman at m2x dot nl>
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* Jean-Paul Saman <jpsaman at m2x dot nl>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*****************************************************************************
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*
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* information on teletext format can be found here :
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* http://pdc.ro.nu/teletext.html
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*
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*****************************************************************************/
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/* This module implements:
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* ETSI EN 301 775: VBI data in PES
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* ETSI EN 300 472: EBU Teletext data in PES
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* ETSI EN 300 706: Enhanced Teletext (libzvbi)
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* ETSI EN 300 231: Video Programme System [VPS] (libzvbi)
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* ETSI EN 300 294: 625-line Wide Screen Signaling [WSS] (libzvbi)
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* EIA-608 Revision A: Closed Captioning [CC] (libzvbi)
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <vlc/vlc.h>
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#include <assert.h>
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#include <stdint.h>
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#include <libzvbi.h>
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#include "vlc_vout.h"
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#include "vlc_bits.h"
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#include "vlc_codec.h"
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#include "vlc_image.h"
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typedef enum {
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DATA_UNIT_EBU_TELETEXT_NON_SUBTITLE = 0x02,
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DATA_UNIT_EBU_TELETEXT_SUBTITLE = 0x03,
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DATA_UNIT_EBU_TELETEXT_INVERTED = 0x0C,
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DATA_UNIT_ZVBI_WSS_CPR1204 = 0xB4,
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DATA_UNIT_ZVBI_CLOSED_CAPTION_525 = 0xB5,
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DATA_UNIT_ZVBI_MONOCHROME_SAMPLES_525 = 0xB6,
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DATA_UNIT_VPS = 0xC3,
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DATA_UNIT_WSS = 0xC4,
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DATA_UNIT_CLOSED_CAPTION = 0xC5,
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DATA_UNIT_MONOCHROME_SAMPLES = 0xC6,
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DATA_UNIT_STUFFING = 0xFF,
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} data_unit_id;
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/*****************************************************************************
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* Module descriptor.
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*****************************************************************************/
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static int Open ( vlc_object_t * );
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static void Close( vlc_object_t * );
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static subpicture_t *Decode( decoder_t *, block_t ** );
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#define PAGE_TEXT N_("Teletext page")
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#define PAGE_LONGTEXT N_("Open the indicated Teletext page." \
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"Default page is index 100")
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#define OPAQUE_TEXT N_("Text is always opaque")
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#define OPAQUE_LONGTEXT N_("Setting vbi-opaque to false " \
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"makes the boxed text transparent." )
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#define POS_TEXT N_("Teletext alignment")
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#define POS_LONGTEXT N_( \
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"You can enforce the teletext position on the video " \
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"(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
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"also use combinations of these values, eg. 6 = top-right).")
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#define TELX_TEXT N_("Teletext text subtitles")
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#define TELX_LONGTEXT N_( "Output teletext subtitles as text " \
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"instead of as RGBA" )
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static int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
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static const char *ppsz_pos_descriptions[] =
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{ N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
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N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
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vlc_module_begin();
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set_description( _("VBI and Teletext decoder") );
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set_shortname( "VBI & Teletext" );
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set_capability( "decoder", 51 );
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set_category( CAT_INPUT );
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set_subcategory( SUBCAT_INPUT_SCODEC );
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set_callbacks( Open, Close );
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add_integer( "vbi-page", 100, NULL,
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PAGE_TEXT, PAGE_LONGTEXT, VLC_FALSE );
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add_bool( "vbi-opaque", VLC_TRUE, NULL,
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OPAQUE_TEXT, OPAQUE_LONGTEXT, VLC_FALSE );
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add_integer( "vbi-position", 4, NULL, POS_TEXT, POS_LONGTEXT, VLC_FALSE );
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change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
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add_bool( "vbi-text", VLC_FALSE, NULL,
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TELX_TEXT, TELX_LONGTEXT, VLC_FALSE );
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vlc_module_end();
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/****************************************************************************
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* Local structures
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****************************************************************************/
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struct decoder_sys_t
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{
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vbi_decoder * p_vbi_dec;
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vbi_dvb_demux * p_dvb_demux;
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unsigned int i_wanted_page;
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unsigned int i_last_page;
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vlc_bool_t b_update;
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vlc_bool_t b_opaque;
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/* Subtitles as text */
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vlc_bool_t b_text;
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/* Positioning of Teletext images */
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int i_align;
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/* Misc */
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#if defined(HAVE_FFMPEG_SWSCALE_H) || defined(HAVE_LIBSWSCALE_SWSCALE_H)
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image_handler_t *p_image;
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#endif
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};
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static void event_handler( vbi_event *ev, void *user_data );
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static int RequestPage( vlc_object_t *p_this, char const *psz_cmd,
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vlc_value_t oldval, vlc_value_t newval, void *p_data );
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static int OpaquePage( decoder_t *p_dec, vbi_page p_page, video_format_t fmt,
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picture_t **p_src );
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static int Opaque_32bpp( decoder_t *p_dec, vbi_page p_page, video_format_t fmt,
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picture_t **p_src );
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static int Opaque_8bpp( decoder_t *p_dec, vbi_page p_page, video_format_t fmt,
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picture_t **p_src );
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static int Opaque( vlc_object_t *p_this, char const *psz_cmd,
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vlc_value_t oldval, vlc_value_t newval, void *p_data );
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static int Position( vlc_object_t *p_this, char const *psz_cmd,
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vlc_value_t oldval, vlc_value_t newval, void *p_data );
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/*****************************************************************************
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* Open: probe the decoder and return score
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*****************************************************************************
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* Tries to launch a decoder and return score so that the interface is able
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* to chose.
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*****************************************************************************/
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static int Open( vlc_object_t *p_this )
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{
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decoder_t *p_dec = (decoder_t *) p_this;
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decoder_sys_t *p_sys = NULL;
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if( p_dec->fmt_in.i_codec != VLC_FOURCC('t','e','l','x') )
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{
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return VLC_EGENERIC;
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}
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p_dec->pf_decode_sub = Decode;
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p_sys = p_dec->p_sys = malloc( sizeof(decoder_sys_t) );
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if( p_sys == NULL )
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{
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msg_Err( p_dec, "out of memory" );
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return VLC_ENOMEM;
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}
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memset( p_sys, 0, sizeof(decoder_sys_t) );
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#if defined(HAVE_FFMPEG_SWSCALE_H) || defined(HAVE_LIBSWSCALE_SWSCALE_H)
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p_sys->p_image = image_HandlerCreate( VLC_OBJECT(p_dec) );
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if( !p_sys->p_image )
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{
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free( p_sys );
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msg_Err( p_dec, "out of memory" );
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return VLC_ENOMEM;
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}
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#endif
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p_sys->b_update = VLC_FALSE;
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p_sys->p_vbi_dec = vbi_decoder_new();
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p_sys->p_dvb_demux = vbi_dvb_pes_demux_new( NULL, NULL );
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if( (p_sys->p_vbi_dec == NULL) || (p_sys->p_dvb_demux == NULL) )
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{
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msg_Err( p_dec, "VBI decoder/demux could not be created." );
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Close( p_this );
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return VLC_ENOMEM;
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}
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vbi_event_handler_register( p_sys->p_vbi_dec, VBI_EVENT_TTX_PAGE |
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VBI_EVENT_CAPTION | VBI_EVENT_NETWORK |
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VBI_EVENT_ASPECT | VBI_EVENT_PROG_INFO,
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event_handler, p_dec );
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/* Create the var on vlc_global. */
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p_sys->i_wanted_page = var_CreateGetInteger( p_dec, "vbi-page" );
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var_AddCallback( p_dec, "vbi-page",
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RequestPage, p_sys );
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p_sys->b_opaque = var_CreateGetBool( p_dec, "vbi-opaque" );
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var_AddCallback( p_dec, "vbi-opaque", Opaque, p_sys );
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p_sys->i_align = var_CreateGetInteger( p_dec, "vbi-position" );
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var_AddCallback( p_dec, "vbi-position", Position, p_sys );
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p_sys->b_text = var_CreateGetBool( p_dec, "vbi-text" );
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// var_AddCallback( p_dec, "vbi-text", Text, p_sys );
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es_format_Init( &p_dec->fmt_out, SPU_ES, VLC_FOURCC( 's','p','u',' ' ) );
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if( p_sys->b_text )
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p_dec->fmt_out.video.i_chroma = VLC_FOURCC('T','E','X','T');
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else
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#if defined(HAVE_FFMPEG_SWSCALE_H) || defined(HAVE_LIBSWSCALE_SWSCALE_H)
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p_dec->fmt_out.video.i_chroma = VLC_FOURCC('Y','U','V','A');
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#else
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p_dec->fmt_out.video.i_chroma = VLC_FOURCC('R','G','B','A');
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#endif
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return VLC_SUCCESS;
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}
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/*****************************************************************************
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* Close:
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*****************************************************************************/
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static void Close( vlc_object_t *p_this )
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{
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decoder_t *p_dec = (decoder_t*) p_this;
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decoder_sys_t *p_sys = p_dec->p_sys;
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var_Destroy( p_dec, "vbi-opaque" );
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var_Destroy( p_dec, "vbi-page" );
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var_DelCallback( p_dec, "vbi-page", RequestPage, p_sys );
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var_DelCallback( p_dec, "vbi-opaque", Opaque, p_sys );
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#if defined(HAVE_FFMPEG_SWSCALE_H) || defined(HAVE_LIBSWSCALE_SWSCALE_H)
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if( p_sys->p_image ) image_HandlerDelete( p_sys->p_image );
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#endif
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if( p_sys->p_vbi_dec ) vbi_decoder_delete( p_sys->p_vbi_dec );
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if( p_sys->p_dvb_demux ) vbi_dvb_demux_delete( p_sys->p_dvb_demux );
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free( p_sys );
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}
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#define MAX_SLICES 32
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/*****************************************************************************
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* Decode:
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*****************************************************************************/
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static subpicture_t *Decode( decoder_t *p_dec, block_t **pp_block )
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{
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decoder_sys_t *p_sys = (decoder_sys_t *) p_dec->p_sys;
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block_t *p_block;
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subpicture_t *p_spu = NULL;
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video_format_t fmt;
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vlc_bool_t b_cached = VLC_FALSE;
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vbi_page p_page;
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const uint8_t *p_pos;
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unsigned int i_left;
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if( (pp_block == NULL) || (*pp_block == NULL) )
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return NULL;
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p_block = *pp_block;
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*pp_block = NULL;
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p_pos = p_block->p_buffer;
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i_left = p_block->i_buffer;
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while( i_left > 0 )
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{
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vbi_sliced p_sliced[MAX_SLICES];
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unsigned int i_lines = 0;
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int64_t i_pts;
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i_lines = vbi_dvb_demux_cor( p_sys->p_dvb_demux, p_sliced,
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MAX_SLICES, &i_pts, &p_pos, &i_left );
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if( i_lines > 0 )
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vbi_decode( p_sys->p_vbi_dec, p_sliced, i_lines, i_pts / 90000.0 );
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}
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/* Try to see if the page we want is in the cache yet */
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b_cached = vbi_fetch_vt_page( p_sys->p_vbi_dec, &p_page,
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vbi_dec2bcd( p_sys->i_wanted_page ),
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VBI_ANY_SUBNO, VBI_WST_LEVEL_3p5,
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25, FALSE );
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if( !b_cached )
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goto error;
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if( ( p_sys->i_wanted_page == p_sys->i_last_page ) &&
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( p_sys->b_update != VLC_TRUE ) )
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goto error;
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p_sys->b_update = VLC_FALSE;
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p_sys->i_last_page = p_sys->i_wanted_page;
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#if 0
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msg_Dbg( p_dec, "we now have page: %d ready for display",
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p_sys->i_wanted_page );
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#endif
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/* If there is a page or sub to render, then we do that here */
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/* Create the subpicture unit */
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p_spu = p_dec->pf_spu_buffer_new( p_dec );
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if( !p_spu )
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{
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msg_Warn( p_dec, "can't get spu buffer" );
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goto error;
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}
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/* Create a new subpicture region */
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memset( &fmt, 0, sizeof(video_format_t) );
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fmt.i_chroma = p_sys->b_text ? VLC_FOURCC('T','E','X','T') :
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#if defined(HAVE_FFMPEG_SWSCALE_H) || defined(HAVE_LIBSWSCALE_SWSCALE_H)
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VLC_FOURCC('Y','U','V','A');
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#else
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VLC_FOURCC('R','G','B','A');
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#endif
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fmt.i_aspect = p_sys->b_text ? 0 : VOUT_ASPECT_FACTOR;
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fmt.i_sar_num = fmt.i_sar_den = 1;
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fmt.i_width = fmt.i_visible_width = p_page.columns * 12;
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fmt.i_height = fmt.i_visible_height = p_page.rows * 10;
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fmt.i_bits_per_pixel = p_sys->b_text ? 0 : 32;
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fmt.i_x_offset = fmt.i_y_offset = 0;
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p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_dec), &fmt );
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if( p_spu->p_region == NULL )
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{
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msg_Err( p_dec, "cannot allocate SPU region" );
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goto error;
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}
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p_spu->p_region->i_x = 0;
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p_spu->p_region->i_y = 0;
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p_spu->p_region->i_align = SUBPICTURE_ALIGN_BOTTOM;
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/* Normal text subs, easy markup */
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p_spu->i_flags = SUBPICTURE_ALIGN_BOTTOM;
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p_spu->i_start = (mtime_t) p_block->i_dts;
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p_spu->i_stop = (mtime_t) 0;
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p_spu->b_ephemer = VLC_TRUE;
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p_spu->b_absolute = VLC_FALSE;
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p_spu->b_pausable = VLC_TRUE;
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p_spu->i_width = fmt.i_width;
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p_spu->i_height = fmt.i_height;
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p_spu->i_original_picture_width = p_page.columns * 12;
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p_spu->i_original_picture_height = p_page.rows * 10;
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#ifdef WORDS_BIGENDIAN
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# define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_BE
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#else
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# define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_LE
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#endif
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if( p_sys->b_text )
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{
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unsigned int i_textsize = 7000;
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int i_total;
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char p_text[7000];
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i_total = vbi_print_page_region( &p_page, p_text, i_textsize,
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"UTF-8", 0, 0, 0, 0, p_page.columns, p_page.rows );
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p_text[i_total] = '\0';
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/* Strip off the pagenumber */
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if( i_total <= 40 ) goto error;
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p_spu->p_region->psz_text = strdup( &p_text[8] );
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p_spu->p_region->fmt.i_height = p_spu->p_region->fmt.i_visible_height = p_page.rows + 1;
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msg_Info( p_dec, "page %x-%x(%d)\n%s", p_page.pgno, p_page.subno, i_total, p_text );
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}
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else
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{
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#if defined(HAVE_FFMPEG_SWSCALE_H) || defined(HAVE_LIBSWSCALE_SWSCALE_H)
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video_format_t fmt_in;
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picture_t *p_pic, *p_dest;
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p_pic = ( picture_t * ) malloc( sizeof( picture_t ) );
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if( !p_pic )
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{
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msg_Err( p_dec, "out of memory" );
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goto error;
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}
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memset( &fmt_in, 0, sizeof( video_format_t ) );
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memset( p_pic, 0, sizeof( picture_t ) );
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fmt_in = fmt;
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fmt_in.i_chroma = VLC_FOURCC('R','G','B','A');
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vout_AllocatePicture( VLC_OBJECT(p_dec), p_pic, fmt_in.i_chroma,
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fmt_in.i_width, fmt_in.i_height, fmt_in.i_aspect );
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if( !p_pic->i_planes )
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{
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free( p_pic->p_data_orig );
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free( p_pic );
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goto error;
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}
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vbi_draw_vt_page( &p_page, ZVBI_PIXFMT_RGBA32,
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p_pic->p->p_pixels, 1, 1 );
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p_pic->p->i_lines = p_page.rows * 10;
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p_pic->p->i_pitch = p_page.columns * 12 * 4;
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#if 0
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msg_Dbg( p_dec, "page %x-%x(%d,%d)",
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p_page.pgno, p_page.subno,
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p_page.rows, p_page.columns );
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#endif
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p_dest = image_Convert( p_sys->p_image, p_pic, &fmt_in,
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&p_spu->p_region->fmt );
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if( !p_dest )
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{
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free( p_pic->p_data_orig );
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free( p_pic );
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msg_Err( p_dec, "chroma conversion failed" );
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goto error;
|
|
}
|
|
OpaquePage( p_dec, p_page, p_spu->p_region->fmt, &p_dest );
|
|
vout_CopyPicture( VLC_OBJECT(p_dec), &(p_spu->p_region->picture),
|
|
p_dest );
|
|
|
|
free( p_pic->p_data_orig );
|
|
free( p_pic );
|
|
|
|
free( p_dest->p_data_orig );
|
|
free( p_dest );
|
|
#else
|
|
picture_t *p_pic;
|
|
|
|
vbi_draw_vt_page( &p_page, ZVBI_PIXFMT_RGBA32,
|
|
p_spu->p_region->picture.p->p_pixels, 1, 1 );
|
|
|
|
p_spu->p_region->picture.p->i_lines = p_page.rows * 10;
|
|
p_spu->p_region->picture.p->i_pitch = p_page.columns * 12 * 4;
|
|
|
|
p_pic = &(p_spu->p_region->picture);
|
|
OpaquePage( p_dec, p_page, fmt, &p_pic );
|
|
#endif
|
|
}
|
|
|
|
#undef PIXFMT_RGBA32
|
|
|
|
vbi_unref_page( &p_page );
|
|
block_Release( p_block );
|
|
return p_spu;
|
|
|
|
error:
|
|
vbi_unref_page( &p_page );
|
|
if( p_spu != NULL )
|
|
{
|
|
p_dec->pf_spu_buffer_del( p_dec, p_spu );
|
|
p_spu = NULL;
|
|
}
|
|
|
|
block_Release( p_block );
|
|
return NULL;
|
|
}
|
|
|
|
static void event_handler( vbi_event *ev, void *user_data )
|
|
{
|
|
decoder_t *p_dec = (decoder_t *)user_data;
|
|
decoder_sys_t *p_sys = p_dec->p_sys;
|
|
|
|
if( ev->type == VBI_EVENT_TTX_PAGE )
|
|
{
|
|
/* msg_Info( p_dec, "Page %03x.%02x ",
|
|
ev->ev.ttx_page.pgno,
|
|
ev->ev.ttx_page.subno & 0xFF);
|
|
*/
|
|
if( p_sys->i_last_page == vbi_bcd2dec( ev->ev.ttx_page.pgno ) )
|
|
p_sys->b_update = VLC_TRUE;
|
|
|
|
if( ev->ev.ttx_page.clock_update )
|
|
msg_Dbg( p_dec, "clock" );
|
|
/* if( ev->ev.ttx_page.header_update )
|
|
msg_Dbg( p_dec, "header" );
|
|
*/
|
|
}
|
|
else if( ev->type == VBI_EVENT_CAPTION )
|
|
msg_Dbg( p_dec, "Caption line: %x", ev->ev.caption.pgno );
|
|
else if( ev->type == VBI_EVENT_NETWORK )
|
|
msg_Dbg( p_dec, "Network change" );
|
|
else if( ev->type == VBI_EVENT_ASPECT )
|
|
msg_Dbg( p_dec, "Aspect update" );
|
|
else if( ev->type == VBI_EVENT_NETWORK )
|
|
msg_Dbg( p_dec, "Program info received" );
|
|
}
|
|
|
|
static int OpaquePage( decoder_t *p_dec, vbi_page p_page,
|
|
video_format_t fmt, picture_t **p_src )
|
|
{
|
|
int result = VLC_EGENERIC;
|
|
|
|
/* Kludge since zvbi doesn't provide an option to specify opacity. */
|
|
switch( fmt.i_chroma )
|
|
{
|
|
case VLC_FOURCC('R','G','B','A' ):
|
|
result = Opaque_32bpp( p_dec, p_page, fmt, p_src );
|
|
break;
|
|
case VLC_FOURCC('Y','U','V','A' ):
|
|
result = Opaque_8bpp( p_dec, p_page, fmt, p_src );
|
|
break;
|
|
default:
|
|
msg_Err( p_dec, "chroma not supported %4.4s", (char *)&fmt.i_chroma );
|
|
return VLC_EGENERIC;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static int Opaque_32bpp( decoder_t *p_dec, vbi_page p_page,
|
|
video_format_t fmt, picture_t **p_src )
|
|
{
|
|
decoder_sys_t *p_sys = (decoder_sys_t *) p_dec->p_sys;
|
|
uint32_t *p_begin, *p_end;
|
|
unsigned int x = 0, y = 0;
|
|
vbi_opacity opacity;
|
|
|
|
/* Kludge since zvbi doesn't provide an option to specify opacity. */
|
|
switch( fmt.i_chroma )
|
|
{
|
|
case VLC_FOURCC('R','G','B','A' ):
|
|
p_begin = (uint32_t *)(*p_src)->p->p_pixels;
|
|
p_end = (uint32_t *)(*p_src)->p->p_pixels +
|
|
( fmt.i_width * fmt.i_height );
|
|
break;
|
|
default:
|
|
msg_Err( p_dec, "chroma not supported %4.4s", (char *)&fmt.i_chroma );
|
|
return VLC_EGENERIC;
|
|
}
|
|
|
|
for( ; p_begin < p_end; p_begin++ )
|
|
{
|
|
opacity = p_page.text[ y / 10 * p_page.columns + x / 12 ].opacity;
|
|
switch( opacity )
|
|
{
|
|
/* Show video instead of this character */
|
|
case VBI_TRANSPARENT_SPACE:
|
|
*p_begin = 0;
|
|
break;
|
|
/* To make the boxed text "closed captioning" transparent
|
|
* change VLC_TRUE to VLC_FALSE.
|
|
*/
|
|
case VBI_OPAQUE:
|
|
if( p_sys->b_opaque )
|
|
break;
|
|
/* Full text transparency. only foreground color is show */
|
|
case VBI_TRANSPARENT_FULL:
|
|
*p_begin = 0;
|
|
break;
|
|
/* Transparency for boxed text */
|
|
case VBI_SEMI_TRANSPARENT:
|
|
if( (*p_begin & 0xffffff00) == 0xff )
|
|
*p_begin = 0;
|
|
break;
|
|
}
|
|
x++;
|
|
if( x >= fmt.i_width )
|
|
{
|
|
x = 0;
|
|
y++;
|
|
}
|
|
}
|
|
/* end of kludge */
|
|
return VLC_SUCCESS;
|
|
}
|
|
|
|
static int Opaque_8bpp( decoder_t *p_dec, vbi_page p_page,
|
|
video_format_t fmt, picture_t **p_src )
|
|
{
|
|
decoder_sys_t *p_sys = (decoder_sys_t *) p_dec->p_sys;
|
|
uint8_t *p_begin, *p_end;
|
|
uint32_t i_width = 0;
|
|
unsigned int x = 0, y = 0;
|
|
vbi_opacity opacity;
|
|
|
|
/* Kludge since zvbi doesn't provide an option to specify opacity. */
|
|
switch( fmt.i_chroma )
|
|
{
|
|
case VLC_FOURCC('Y','U','V','A' ):
|
|
p_begin = (uint8_t *)(*p_src)->p[A_PLANE].p_pixels;
|
|
p_end = (uint8_t *)(*p_src)->p[A_PLANE].p_pixels +
|
|
( fmt.i_height * (*p_src)->p[A_PLANE].i_pitch );
|
|
i_width = (*p_src)->p[A_PLANE].i_pitch;
|
|
break;
|
|
default:
|
|
msg_Err( p_dec, "chroma not supported %4.4s", (char *)&fmt.i_chroma );
|
|
return VLC_EGENERIC;
|
|
}
|
|
|
|
for( ; p_begin < p_end; p_begin++ )
|
|
{
|
|
opacity = p_page.text[ y / 10 * p_page.columns + x / 12 ].opacity;
|
|
switch( opacity )
|
|
{
|
|
/* Show video instead of this character */
|
|
case VBI_TRANSPARENT_SPACE:
|
|
*p_begin = 0;
|
|
break;
|
|
/* To make the boxed text "closed captioning" transparent
|
|
* change VLC_TRUE to VLC_FALSE.
|
|
*/
|
|
case VBI_OPAQUE:
|
|
if( p_sys->b_opaque )
|
|
break;
|
|
/* Full text transparency. only foreground color is show */
|
|
case VBI_TRANSPARENT_FULL:
|
|
*p_begin = 0;
|
|
break;
|
|
/* Transparency for boxed text */
|
|
case VBI_SEMI_TRANSPARENT:
|
|
if( (*p_begin & 0xffffff00) == 0xff )
|
|
*p_begin = 0;
|
|
break;
|
|
}
|
|
x++;
|
|
if( x >= i_width )
|
|
{
|
|
x = 0;
|
|
y++;
|
|
}
|
|
}
|
|
/* end of kludge */
|
|
return VLC_SUCCESS;
|
|
}
|
|
|
|
static int RequestPage( vlc_object_t *p_this, char const *psz_cmd,
|
|
vlc_value_t oldval, vlc_value_t newval, void *p_data )
|
|
{
|
|
decoder_sys_t *p_sys = p_data;
|
|
|
|
if( (newval.i_int > 0) && (newval.i_int < 999) )
|
|
p_sys->i_wanted_page = newval.i_int;
|
|
|
|
return VLC_SUCCESS;
|
|
}
|
|
|
|
static int Opaque( vlc_object_t *p_this, char const *psz_cmd,
|
|
vlc_value_t oldval, vlc_value_t newval, void *p_data )
|
|
{
|
|
decoder_sys_t *p_sys = p_data;
|
|
|
|
if( p_sys )
|
|
p_sys->b_opaque = newval.b_bool;
|
|
return VLC_SUCCESS;
|
|
}
|
|
|
|
static int Position( vlc_object_t *p_this, char const *psz_cmd,
|
|
vlc_value_t oldval, vlc_value_t newval, void *p_data )
|
|
{
|
|
decoder_sys_t *p_sys = p_data;
|
|
|
|
if( p_sys )
|
|
p_sys->i_align = newval.i_int;
|
|
return VLC_SUCCESS;
|
|
}
|