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vlc/modules/codec/zvbi.c
Steve Lhomme 5363279805 remove the $Id$ in the source code
2019-01-17 12:21:18 +01:00

738 lines
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/*****************************************************************************
* zvbi.c : VBI and Teletext PES demux and decoder using libzvbi
*****************************************************************************
* Copyright (C) 2007, M2X
*
* Authors: Derk-Jan Hartman <djhartman at m2x dot nl>
* Jean-Paul Saman <jpsaman at m2x dot nl>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
*
* information on teletext format can be found here :
* http://pdc.ro.nu/teletext.html
*
*****************************************************************************/
/* This module implements:
* ETSI EN 301 775: VBI data in PES
* ETSI EN 300 472: EBU Teletext data in PES
* ETSI EN 300 706: Enhanced Teletext (libzvbi)
* ETSI EN 300 231: Video Programme System [VPS] (libzvbi)
* ETSI EN 300 294: 625-line Wide Screen Signaling [WSS] (libzvbi)
* EIA-608 Revision A: Closed Captioning [CC] (libzvbi)
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <ctype.h>
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <assert.h>
#include <libzvbi.h>
#include <vlc_codec.h>
#include "substext.h"
/*****************************************************************************
* Module descriptor.
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close( vlc_object_t * );
#define PAGE_TEXT N_("Teletext page")
#define PAGE_LONGTEXT N_("Open the indicated Teletext page. " \
"Default page is index 100.")
#define OPAQUE_TEXT N_("Opacity")
#define OPAQUE_LONGTEXT N_("Setting to true " \
"makes the text to be boxed and maybe easier to read." )
#define POS_TEXT N_("Teletext alignment")
#define POS_LONGTEXT N_( \
"You can enforce the teletext position on the video " \
"(0=center, 1=left, 2=right, 4=top, 8=bottom, you can " \
"also use combinations of these values, eg. 6 = top-right).")
#define TELX_TEXT N_("Teletext text subtitles")
#define TELX_LONGTEXT N_( "Output teletext subtitles as text " \
"instead of as RGBA." )
#define LEVEL_TEXT N_("Presentation Level")
static const int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
static const char *const ppsz_pos_descriptions[] =
{ N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
static const int level_values[] = { 0, 1, 2, 3 };
static const char *const level_descriptions[] =
{ N_("1"), N_("1.5"), N_("2.5"), N_("3.5") };
/* separate internal and zvbi values, as the latter could change */
static const int level_zvbi_values[] =
{ VBI_WST_LEVEL_1, VBI_WST_LEVEL_1p5, VBI_WST_LEVEL_2p5, VBI_WST_LEVEL_3p5 };
vlc_module_begin ()
set_description( N_("VBI and Teletext decoder") )
set_shortname( N_("VBI & Teletext") )
set_capability( "spu decoder", 51 )
set_category( CAT_INPUT )
set_subcategory( SUBCAT_INPUT_SCODEC )
set_callbacks( Open, Close )
add_integer_with_range( "vbi-page", 100, 0, 'z' << 16,
PAGE_TEXT, PAGE_LONGTEXT, false )
add_bool( "vbi-opaque", false,
OPAQUE_TEXT, OPAQUE_LONGTEXT, false )
add_integer( "vbi-position", 8, POS_TEXT, POS_LONGTEXT, false )
change_integer_list( pi_pos_values, ppsz_pos_descriptions );
add_bool( "vbi-text", false,
TELX_TEXT, TELX_LONGTEXT, false )
add_integer( "vbi-level", 3, LEVEL_TEXT, NULL, false )
change_integer_list( level_values, level_descriptions );
vlc_module_end ()
/****************************************************************************
* Local structures
****************************************************************************/
// #define ZVBI_DEBUG
//Guessing table for missing "default region triplet"
static const int pi_default_triplet[] = {
0, 0, 0, 0, // slo slk cze ces
8, // pol
24,24,24,24,24, //scc scr srp hrv slv
24,24, //rum ron
32,32,32,32,32, //est lit rus bul ukr
48,48, //gre ell
64, //ara
88, //heb
16 }; //default
static const char *const ppsz_default_triplet[] = {
"slo", "slk", "cze", "ces",
"pol",
"scc", "scr", "srp", "hrv", "slv",
"rum", "ron",
"est", "lit", "rus", "bul", "ukr",
"gre", "ell",
"ara",
"heb",
NULL
};
typedef enum {
ZVBI_KEY_RED = 'r' << 16,
ZVBI_KEY_GREEN = 'g' << 16,
ZVBI_KEY_YELLOW = 'y' << 16,
ZVBI_KEY_BLUE = 'b' << 16,
ZVBI_KEY_INDEX = 'i' << 16,
} ttxt_key_id;
#define MAX_SLICES 32
typedef struct
{
vbi_decoder * p_vbi_dec;
vbi_sliced p_vbi_sliced[MAX_SLICES];
unsigned int i_last_page;
bool b_update;
bool b_text; /* Subtitles as text */
vlc_mutex_t lock; /* Lock to protect the following variables */
/* Positioning of Teletext images */
int i_align;
/* */
unsigned int i_wanted_page;
unsigned int i_wanted_subpage;
/* */
bool b_opaque;
unsigned int i_level;
struct {
int pgno, subno;
} nav_link[6];
int i_key[3];
} decoder_sys_t;
static int Decode( decoder_t *, block_t * );
static subpicture_t *Subpicture( decoder_t *p_dec, video_format_t *p_fmt,
bool b_text,
int i_columns, int i_rows,
int i_align, vlc_tick_t i_pts );
static void EventHandler( vbi_event *ev, void *user_data );
static int OpaquePage( picture_t *p_src, const vbi_page *p_page,
const video_format_t *p_fmt, bool b_opaque, const int text_offset );
static int get_first_visible_row( vbi_char *p_text, int rows, int columns);
static int get_last_visible_row( vbi_char *p_text, int rows, int columns);
/* Properties callbacks */
static int RequestPage( vlc_object_t *p_this, char const *psz_cmd,
vlc_value_t oldval, vlc_value_t newval, void *p_data );
static int Opaque( vlc_object_t *p_this, char const *psz_cmd,
vlc_value_t oldval, vlc_value_t newval, void *p_data );
/*****************************************************************************
* Open: probe the decoder and return score
*****************************************************************************
* Tries to launch a decoder and return score so that the interface is able
* to chose.
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t *) p_this;
decoder_sys_t *p_sys = NULL;
if( p_dec->fmt_in.i_codec != VLC_CODEC_TELETEXT )
return VLC_EGENERIC;
int i_page = var_CreateGetInteger( p_dec, "vbi-page" );
if( i_page > 999 )
{
msg_Warn( p_dec, "invalid vbi-page requested");
i_page = 0;
}
p_sys = p_dec->p_sys = calloc( 1, sizeof(decoder_sys_t) );
if( p_sys == NULL )
return VLC_ENOMEM;
p_sys->i_key[0] = p_sys->i_key[1] = p_sys->i_key[2] = '*' - '0';
p_sys->b_update = false;
p_sys->p_vbi_dec = vbi_decoder_new();
vlc_mutex_init( &p_sys->lock );
if( p_sys->p_vbi_dec == NULL )
{
msg_Err( p_dec, "VBI decoder could not be created." );
Close( p_this );
return VLC_ENOMEM;
}
/* Some broadcasters in countries with level 1 and level 1.5 still not send a G0 to do
* matches against table 32 of ETSI 300 706. We try to do some best effort guessing
* This is not perfect, but might handle some cases where we know the vbi language
* is known. It would be better if people started sending G0 */
for( int i = 0; ppsz_default_triplet[i] != NULL; i++ )
{
if( p_dec->fmt_in.psz_language && !strcasecmp( p_dec->fmt_in.psz_language, ppsz_default_triplet[i] ) )
{
vbi_teletext_set_default_region( p_sys->p_vbi_dec, pi_default_triplet[i]);
msg_Dbg( p_dec, "overwriting default zvbi region: %d", pi_default_triplet[i] );
}
}
vbi_event_handler_register( p_sys->p_vbi_dec, VBI_EVENT_TTX_PAGE | VBI_EVENT_NETWORK |
#ifdef ZVBI_DEBUG
VBI_EVENT_CAPTION | VBI_EVENT_TRIGGER |
VBI_EVENT_ASPECT | VBI_EVENT_PROG_INFO | VBI_EVENT_NETWORK_ID |
#endif
0 , EventHandler, p_dec );
/* Create the var on vlc_global. */
p_sys->i_wanted_page = i_page;
var_AddCallback( p_dec, "vbi-page", RequestPage, p_sys );
/* Check if the Teletext track has a known "initial page". */
if( p_sys->i_wanted_page == 100 && p_dec->fmt_in.subs.teletext.i_magazine != -1 )
{
p_sys->i_wanted_page = 100 * p_dec->fmt_in.subs.teletext.i_magazine +
vbi_bcd2dec( p_dec->fmt_in.subs.teletext.i_page );
var_SetInteger( p_dec, "vbi-page", p_sys->i_wanted_page );
}
p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
p_sys->b_opaque = var_CreateGetBool( p_dec, "vbi-opaque" );
var_AddCallback( p_dec, "vbi-opaque", Opaque, p_sys );
p_sys->i_align = var_CreateGetInteger( p_dec, "vbi-position" );
p_sys->b_text = var_CreateGetBool( p_dec, "vbi-text" );
p_sys->i_level = var_CreateGetInteger( p_dec, "vbi-level" );
p_dec->fmt_out.i_codec = p_sys->b_text ? VLC_CODEC_TEXT : VLC_CODEC_RGBA;
p_dec->pf_decode = Decode;
return VLC_SUCCESS;
}
/*****************************************************************************
* Close:
*****************************************************************************/
static void Close( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t*) p_this;
decoder_sys_t *p_sys = p_dec->p_sys;
var_DelCallback( p_dec, "vbi-opaque", Opaque, p_sys );
var_DelCallback( p_dec, "vbi-page", RequestPage, p_sys );
vlc_mutex_destroy( &p_sys->lock );
if( p_sys->p_vbi_dec )
vbi_decoder_delete( p_sys->p_vbi_dec );
free( p_sys );
}
#ifdef WORDS_BIGENDIAN
# define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_BE
#else
# define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_LE
#endif
/*****************************************************************************
* Decode:
*****************************************************************************/
static int Decode( decoder_t *p_dec, block_t *p_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
subpicture_t *p_spu = NULL;
video_format_t fmt;
bool b_cached = false;
vbi_page p_page;
if( p_block == NULL ) /* No Drain */
return VLCDEC_SUCCESS;
if( p_block->i_buffer > 0 &&
( ( p_block->p_buffer[0] >= 0x10 && p_block->p_buffer[0] <= 0x1f ) ||
( p_block->p_buffer[0] >= 0x99 && p_block->p_buffer[0] <= 0x9b ) ) )
{
vbi_sliced *p_sliced = p_sys->p_vbi_sliced;
unsigned int i_lines = 0;
p_block->i_buffer--;
p_block->p_buffer++;
while( p_block->i_buffer >= 2 )
{
int i_id = p_block->p_buffer[0];
unsigned i_size = p_block->p_buffer[1];
if( 2 + i_size > p_block->i_buffer )
break;
if( ( i_id == 0x02 || i_id == 0x03 ) && i_size >= 44 && i_lines < MAX_SLICES )
{
if(p_block->p_buffer[3] == 0xE4 ) /* framing_code */
{
unsigned line_offset = p_block->p_buffer[2] & 0x1f;
unsigned field_parity = p_block->p_buffer[2] & 0x20;
p_sliced[i_lines].id = VBI_SLICED_TELETEXT_B;
if( line_offset > 0 )
p_sliced[i_lines].line = line_offset + (field_parity ? 0 : 313);
else
p_sliced[i_lines].line = 0;
for( int i = 0; i < 42; i++ )
p_sliced[i_lines].data[i] = vbi_rev8( p_block->p_buffer[4 + i] );
i_lines++;
}
}
p_block->i_buffer -= 2 + i_size;
p_block->p_buffer += 2 + i_size;
}
if( i_lines > 0 )
vbi_decode( p_sys->p_vbi_dec, p_sliced, i_lines, 0 );
}
/* */
vlc_mutex_lock( &p_sys->lock );
if( p_sys->i_wanted_page == 0 )
{
vlc_mutex_unlock( &p_sys->lock );
block_Release( p_block );
return VLCDEC_SUCCESS;
}
const int i_align = p_sys->i_align;
const unsigned int i_wanted_page = p_sys->i_wanted_page;
const unsigned int i_wanted_subpage = p_sys->i_wanted_subpage;
const bool b_opaque = p_sys->b_opaque;
const unsigned int i_level = p_sys->i_level > 3 ? 3 : p_sys->i_level;
vlc_mutex_unlock( &p_sys->lock );
/* Try to see if the page we want is in the cache yet */
memset( &p_page, 0, sizeof(vbi_page) );
b_cached = vbi_fetch_vt_page( p_sys->p_vbi_dec, &p_page,
vbi_dec2bcd( i_wanted_page ),
i_wanted_subpage, level_zvbi_values[i_level],
25, true );
if( i_wanted_page == p_sys->i_last_page && !p_sys->b_update )
goto error;
if( !b_cached )
{
if( p_sys->b_text && p_sys->i_last_page != i_wanted_page )
{
/* We need to reset the subtitle */
p_spu = Subpicture( p_dec, &fmt, true,
p_page.columns, p_page.rows,
i_align, p_block->i_pts );
if( !p_spu )
goto error;
subtext_updater_sys_t *p_spu_sys = p_spu->updater.p_sys;
p_spu_sys->region.p_segments = text_segment_New("");
p_sys->b_update = true;
p_sys->i_last_page = i_wanted_page;
goto exit;
}
goto error;
}
p_sys->b_update = false;
p_sys->i_last_page = i_wanted_page;
#ifdef ZVBI_DEBUG
msg_Dbg( p_dec, "we now have page: %d ready for display",
i_wanted_page );
#endif
/* Ignore transparent rows at the beginning and end */
int i_first_row = get_first_visible_row( p_page.text, p_page.rows, p_page.columns );
int i_num_rows;
if ( i_first_row < 0 ) {
i_first_row = p_page.rows - 1;
i_num_rows = 0;
} else {
i_num_rows = get_last_visible_row( p_page.text, p_page.rows, p_page.columns ) - i_first_row + 1;
}
#ifdef ZVBI_DEBUG
msg_Dbg( p_dec, "After top and tail of page we have rows %i-%i of %i",
i_first_row + 1, i_first_row + i_num_rows, p_page.rows );
#endif
/* If there is a page or sub to render, then we do that here */
/* Create the subpicture unit */
p_spu = Subpicture( p_dec, &fmt, p_sys->b_text,
p_page.columns, i_num_rows,
i_align, p_block->i_pts );
if( !p_spu )
goto error;
if( p_sys->b_text )
{
unsigned int i_textsize = 7000;
int i_total,offset;
char p_text[i_textsize+1];
i_total = vbi_print_page_region( &p_page, p_text, i_textsize,
"UTF-8", 0, 0, 0, i_first_row, p_page.columns, i_num_rows );
for( offset=1; offset<i_total && isspace( p_text[i_total-offset ] ); offset++)
p_text[i_total-offset] = '\0';
i_total -= offset;
offset=0;
while( offset < i_total && isspace( p_text[offset] ) )
offset++;
subtext_updater_sys_t *p_spu_sys = p_spu->updater.p_sys;
p_spu_sys->region.p_segments = text_segment_New( &p_text[offset] );
if( p_spu_sys->region.p_segments && b_opaque )
{
p_spu_sys->region.p_segments->style = text_style_Create( STYLE_NO_DEFAULTS );
if( p_spu_sys->region.p_segments->style )
{
/* Set text background */
p_spu_sys->region.p_segments->style->i_style_flags = STYLE_BACKGROUND;
p_spu_sys->region.p_segments->style->i_features |= STYLE_HAS_FLAGS;
}
}
p_spu_sys->region.inner_align = i_align;
p_spu_sys->region.flags = UPDT_REGION_IGNORE_BACKGROUND;
#ifdef ZVBI_DEBUG
msg_Info( p_dec, "page %x-%x(%d)\n\"%s\"", p_page.pgno, p_page.subno, i_total, &p_text[offset] );
#endif
}
else
{
picture_t *p_pic = p_spu->p_region->p_picture;
/* ZVBI is stupid enough to assume pitch == width */
p_pic->p->i_pitch = 4 * fmt.i_width;
/* Maintain subtitle postion */
p_spu->p_region->i_y = i_first_row*10;
p_spu->i_original_picture_width = p_page.columns*12;
p_spu->i_original_picture_height = p_page.rows*10;
vbi_draw_vt_page_region( &p_page, ZVBI_PIXFMT_RGBA32,
p_spu->p_region->p_picture->p->p_pixels, -1,
0, i_first_row, p_page.columns, i_num_rows,
1, 1);
vlc_mutex_lock( &p_sys->lock );
memcpy( p_sys->nav_link, &p_page.nav_link, sizeof( p_sys->nav_link )) ;
vlc_mutex_unlock( &p_sys->lock );
OpaquePage( p_pic, &p_page, &fmt, b_opaque, i_first_row * p_page.columns );
}
exit:
vbi_unref_page( &p_page );
block_Release( p_block );
if( p_spu )
decoder_QueueSub( p_dec, p_spu );
return VLCDEC_SUCCESS;
error:
vbi_unref_page( &p_page );
block_Release( p_block );
return VLCDEC_SUCCESS;
}
static subpicture_t *Subpicture( decoder_t *p_dec, video_format_t *p_fmt,
bool b_text,
int i_columns, int i_rows, int i_align,
vlc_tick_t i_pts )
{
video_format_t fmt;
subpicture_t *p_spu=NULL;
/* If there is a page or sub to render, then we do that here */
/* Create the subpicture unit */
if( b_text )
p_spu = decoder_NewSubpictureText( p_dec );
else
p_spu = decoder_NewSubpicture( p_dec, NULL );
if( !p_spu )
{
msg_Warn( p_dec, "can't get spu buffer" );
return NULL;
}
video_format_Init(&fmt, b_text ? VLC_CODEC_TEXT : VLC_CODEC_RGBA);
if( b_text )
{
fmt.i_bits_per_pixel = 0;
}
else
{
fmt.i_width = fmt.i_visible_width = i_columns * 12;
fmt.i_height = fmt.i_visible_height = i_rows * 10;
fmt.i_bits_per_pixel = 32;
fmt.i_sar_num = fmt.i_sar_den = 0; /* let the vout set the correct AR */
}
fmt.i_x_offset = fmt.i_y_offset = 0;
p_spu->p_region = subpicture_region_New( &fmt );
if( p_spu->p_region == NULL )
{
msg_Err( p_dec, "cannot allocate SPU region" );
subpicture_Delete( p_spu );
return NULL;
}
p_spu->p_region->i_x = 0;
p_spu->p_region->i_y = 0;
p_spu->i_start = i_pts;
p_spu->i_stop = b_text ? i_pts + VLC_TICK_FROM_SEC(10): 0;
p_spu->b_ephemer = true;
p_spu->b_absolute = b_text ? false : true;
if( !b_text )
p_spu->p_region->i_align = i_align;
p_spu->i_original_picture_width = fmt.i_width;
p_spu->i_original_picture_height = fmt.i_height;
/* */
*p_fmt = fmt;
return p_spu;
}
static void EventHandler( 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 )
{
#ifdef ZVBI_DEBUG
msg_Info( p_dec, "Page %03x.%02x ",
ev->ev.ttx_page.pgno,
ev->ev.ttx_page.subno & 0xFF);
#endif
if( p_sys->i_last_page == vbi_bcd2dec( ev->ev.ttx_page.pgno ) )
p_sys->b_update = true;
#ifdef ZVBI_DEBUG
if( ev->ev.ttx_page.clock_update )
msg_Dbg( p_dec, "clock" );
if( ev->ev.ttx_page.header_update )
msg_Dbg( p_dec, "header" );
#endif
}
else if( ev->type == VBI_EVENT_CLOSE )
msg_Dbg( p_dec, "Close event" );
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");
vbi_network n = ev->ev.network;
msg_Dbg( p_dec, "Network id:%d name: %s, call: %s ", n.nuid, n.name, n.call );
}
else if( ev->type == VBI_EVENT_TRIGGER )
msg_Dbg( p_dec, "Trigger event" );
else if( ev->type == VBI_EVENT_ASPECT )
msg_Dbg( p_dec, "Aspect update" );
else if( ev->type == VBI_EVENT_PROG_INFO )
msg_Dbg( p_dec, "Program info received" );
else if( ev->type == VBI_EVENT_NETWORK_ID )
msg_Dbg( p_dec, "Network ID changed" );
}
static int get_first_visible_row( vbi_char *p_text, int rows, int columns)
{
for ( int i = 0; i < rows * columns; i++ )
{
if ( p_text[i].opacity != VBI_TRANSPARENT_SPACE )
{
return i / columns;
}
}
return -1;
}
static int get_last_visible_row( vbi_char *p_text, int rows, int columns)
{
for ( int i = rows * columns - 1; i >= 0; i-- )
{
if (p_text[i].opacity != VBI_TRANSPARENT_SPACE)
{
return i / columns;
}
}
return -1;
}
static int OpaquePage( picture_t *p_src, const vbi_page *p_page,
const video_format_t *p_fmt, bool b_opaque, const int text_offset )
{
unsigned int x, y;
assert( p_fmt->i_chroma == VLC_CODEC_RGBA );
/* Kludge since zvbi doesn't provide an option to specify opacity. */
for( y = 0; y < p_fmt->i_height; y++ )
{
for( x = 0; x < p_fmt->i_width; x++ )
{
const vbi_opacity opacity = p_page->text[ text_offset + y/10 * p_page->columns + x/12 ].opacity;
const int background = p_page->text[ text_offset + y/10 * p_page->columns + x/12 ].background;
uint32_t *p_pixel = (uint32_t*)&p_src->p->p_pixels[y * p_src->p->i_pitch + 4*x];
switch( opacity )
{
/* Show video instead of this character */
case VBI_TRANSPARENT_SPACE:
*p_pixel = 0;
break;
/* Display foreground and background color */
/* To make the boxed text "closed captioning" transparent
* change true to false.
*/
case VBI_OPAQUE:
/* alpha blend video into background color */
case VBI_SEMI_TRANSPARENT:
if( b_opaque )
break;
/* Full text transparency. only foreground color is show */
case VBI_TRANSPARENT_FULL:
if( (*p_pixel) == (0xff000000 | p_page->color_map[background] ) )
*p_pixel = 0;
break;
}
}
}
/* end of kludge */
return VLC_SUCCESS;
}
/* Callbacks */
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;
VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
int want_navlink = -1;
vlc_mutex_lock( &p_sys->lock );
switch( newval.i_int )
{
case ZVBI_KEY_RED:
want_navlink = 0;
break;
case ZVBI_KEY_GREEN:
want_navlink = 1;
break;
case ZVBI_KEY_YELLOW:
want_navlink = 2;
break;
case ZVBI_KEY_BLUE:
want_navlink = 3;
break;
case ZVBI_KEY_INDEX:
want_navlink = 5; /* #4 is SKIPPED */
break;
}
if (want_navlink > -1)
{
int page = vbi_bcd2dec( p_sys->nav_link[want_navlink].pgno );
if (page > 0 && page < 999) {
p_sys->i_wanted_page = page;
p_sys->i_wanted_subpage = p_sys->nav_link[want_navlink].subno;
}
}
else if( newval.i_int >= 0 && newval.i_int < 999 )
{
p_sys->i_wanted_page = newval.i_int;
p_sys->i_wanted_subpage = VBI_ANY_SUBNO;
}
vlc_mutex_unlock( &p_sys->lock );
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;
VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
vlc_mutex_lock( &p_sys->lock );
p_sys->b_opaque = newval.b_bool;
p_sys->b_update = true;
vlc_mutex_unlock( &p_sys->lock );
return VLC_SUCCESS;
}
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