/*****************************************************************************
* OpenDecoder: probe the decoder and return score
*****************************************************************************
* Tries to launch a decoder and return score so that the interface is able
* to chose.
*****************************************************************************/
static int OpenDecoder( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t*)p_this;
decoder_sys_t *p_sys;
vlc_value_t val;
if( p_dec->fmt_in.i_codec != VLC_FOURCC('s','u','b','t') &&
p_dec->fmt_in.i_codec != VLC_FOURCC('s','s','a',' ') )
{
return VLC_EGENERIC;
}
p_dec->pf_decode_sub = DecodeBlock;
/* Allocate the memory needed to store the decoder's structure */
if( ( p_dec->p_sys = p_sys =
(decoder_sys_t *)malloc(sizeof(decoder_sys_t)) ) == NULL )
{
msg_Err( p_dec, "out of memory" );
return VLC_ENOMEM;
}
/* init of p_sys */
p_sys->i_align = 0;
p_sys->iconv_handle = (vlc_iconv_t)-1;
p_sys->b_autodetect_utf8 = VLC_FALSE;
p_sys->b_ass = VLC_FALSE;
p_sys->i_original_height = -1;
p_sys->i_original_width = -1;
p_sys->pp_ssa_styles = NULL;
p_sys->i_ssa_styles = 0;
if( p_dec->fmt_in.subs.psz_encoding && *p_dec->fmt_in.subs.psz_encoding )
{
msg_Dbg( p_dec, "using demux suggested character encoding: %s",
p_dec->fmt_in.subs.psz_encoding );
if( strcmp( p_dec->fmt_in.subs.psz_encoding, "UTF-8" ) )
p_sys->iconv_handle = vlc_iconv_open( "UTF-8", p_dec->fmt_in.subs.psz_encoding );
}
else
{
var_Create( p_dec, "subsdec-encoding",
VLC_VAR_STRING | VLC_VAR_DOINHERIT );
var_Get( p_dec, "subsdec-encoding", &val );
if( !strcmp( val.psz_string, DEFAULT_NAME ) )
{
const char *psz_charset = GetFallbackEncoding();
p_sys->b_autodetect_utf8 = var_CreateGetBool( p_dec,
"subsdec-autodetect-utf8" );
p_sys->iconv_handle = vlc_iconv_open( "UTF-8", psz_charset );
msg_Dbg( p_dec, "using fallback character encoding: %s", psz_charset );
}
else if( !strcmp( val.psz_string, "UTF-8" ) )
{
msg_Dbg( p_dec, "using enforced character encoding: UTF-8" );
}
else if( val.psz_string )
{
msg_Dbg( p_dec, "using enforced character encoding: %s", val.psz_string );
p_sys->iconv_handle = vlc_iconv_open( "UTF-8", val.psz_string );
if( p_sys->iconv_handle == (vlc_iconv_t)-1 )
{
msg_Warn( p_dec, "unable to do requested conversion" );
}
}
if( val.psz_string ) free( val.psz_string );
}
var_Create( p_dec, "subsdec-align", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Get( p_dec, "subsdec-align", &val );
p_sys->i_align = val.i_int;
if( p_dec->fmt_in.i_codec == VLC_FOURCC('s','s','a',' ') && var_CreateGetBool( p_dec, "subsdec-formatted" ) )
{
if( p_dec->fmt_in.i_extra > 0 )
ParseSSAHeader( p_dec );
}
return VLC_SUCCESS;
}
/*****************************************************************************
* OpenDecoder: probe the decoder and return score
*****************************************************************************
* Tries to launch a decoder and return score so that the interface is able
* to chose.
*****************************************************************************/
static int OpenDecoder( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t*)p_this;
decoder_sys_t *p_sys;
switch( p_dec->fmt_in.i_codec )
{
case VLC_CODEC_SUBT:
case VLC_CODEC_SSA:
case VLC_CODEC_ITU_T140:
break;
default:
return VLC_EGENERIC;
}
p_dec->pf_decode_sub = DecodeBlock;
p_dec->fmt_out.i_cat = SPU_ES;
p_dec->fmt_out.i_codec = 0;
/* Allocate the memory needed to store the decoder's structure */
p_dec->p_sys = p_sys = calloc( 1, sizeof( *p_sys ) );
if( p_sys == NULL )
return VLC_ENOMEM;
/* init of p_sys */
p_sys->i_align = 0;
p_sys->iconv_handle = (vlc_iconv_t)-1;
p_sys->b_autodetect_utf8 = false;
p_sys->b_ass = false;
p_sys->i_original_height = -1;
p_sys->i_original_width = -1;
TAB_INIT( p_sys->i_ssa_styles, p_sys->pp_ssa_styles );
TAB_INIT( p_sys->i_images, p_sys->pp_images );
char *psz_charset = NULL;
/* First try demux-specified encoding */
if( p_dec->fmt_in.i_codec == VLC_CODEC_ITU_T140 )
psz_charset = strdup( "UTF-8" ); /* IUT T.140 is always using UTF-8 */
else
if( p_dec->fmt_in.subs.psz_encoding && *p_dec->fmt_in.subs.psz_encoding )
{
psz_charset = strdup (p_dec->fmt_in.subs.psz_encoding);
msg_Dbg (p_dec, "trying demuxer-specified character encoding: %s",
p_dec->fmt_in.subs.psz_encoding ?
p_dec->fmt_in.subs.psz_encoding : "not specified");
}
/* Second, try configured encoding */
if (psz_charset == NULL)
{
psz_charset = var_InheritString (p_dec, "subsdec-encoding");
msg_Dbg (p_dec, "trying configured character encoding: %s",
psz_charset ? psz_charset : "not specified");
if (psz_charset != NULL && !strcmp (psz_charset, "system"))
{
free (psz_charset);
psz_charset = strdup ("");
/* ^ iconv() treats "" as nl_langinfo(CODESET) */
}
}
/* Third, try "local" encoding with optional UTF-8 autodetection */
if (psz_charset == NULL)
{
/* xgettext:
The Windows ANSI code page most commonly used for this language.
VLC uses this as a guess of the subtitle files character set
(if UTF-8 and UTF-16 autodetection fails).
Western European languages normally use "CP1252", which is a
Microsoft-variant of ISO 8859-1. That suits the Latin alphabet.
Other scripts use other code pages.
This MUST be a valid iconv character set. If unsure, please refer
the VideoLAN translators mailing list. */
const char *acp = vlc_pgettext("GetACP", "CP1252");
psz_charset = strdup (acp);
msg_Dbg (p_dec, "trying default character encoding: %s",
psz_charset ? psz_charset : "not specified");
if (var_InheritBool (p_dec, "subsdec-autodetect-utf8"))
{
msg_Dbg (p_dec, "using automatic UTF-8 detection");
p_sys->b_autodetect_utf8 = true;
}
}
/* Forth, don't do character decoding, i.e. assume UTF-8 */
if (psz_charset == NULL)
{
psz_charset = strdup ("UTF-8");
msg_Dbg (p_dec, "using UTF-8 character encoding" );
}
if ((psz_charset != NULL)
&& strcasecmp (psz_charset, "UTF-8")
&& strcasecmp (psz_charset, "utf8"))
{
p_sys->iconv_handle = vlc_iconv_open ("UTF-8", psz_charset);
if (p_sys->iconv_handle == (vlc_iconv_t)(-1))
msg_Err (p_dec, "cannot convert from %s: %m", psz_charset);
}
free (psz_charset);
p_sys->i_align = var_InheritInteger( p_dec, "subsdec-align" );
if( p_dec->fmt_in.i_codec == VLC_CODEC_SSA
&& var_InheritBool( p_dec, "subsdec-formatted" ) )
{
if( p_dec->fmt_in.i_extra > 0 )
ParseSSAHeader( p_dec );
}
return VLC_SUCCESS;
}
