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/*****************************************************************************
* vobsub.h: Vobsub support
*****************************************************************************
* Copyright (C) 2009 VLC authors and VideoLAN
* $Id: 63b6bd0914be00c4ed15940eddbcc04133abcef3 $
*
* Authors: John Stebbins
*
* 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.
*****************************************************************************/
static inline void vobsub_palette_rgb2yuv( uint32_t *pu_palette )
{
int i;
for( i = 0; i < 16; i++ )
{
uint8_t r, g, b, y, u, v;
r = (pu_palette[i] >> 16) & 0xff;
g = (pu_palette[i] >> 8) & 0xff;
b = (pu_palette[i] >> 0) & 0xff;
y = (uint8_t) __MIN(abs(r * 2104 + g * 4130 + b * 802 + 4096 + 131072) >> 13, 235);
u = (uint8_t) __MIN(abs(r * -1214 + g * -2384 + b * 3598 + 4096 + 1048576) >> 13, 240);
v = (uint8_t) __MIN(abs(r * 3598 + g * -3013 + b * -585 + 4096 + 1048576) >> 13, 240);
pu_palette[i] = (y&0xff)<<16 | (v&0xff)<<8 | (u&0xff);
}
}
static inline int vobsub_palette_parse( const char *psz_buf, uint32_t *pu_palette )
{
if( sscanf( psz_buf, "palette: "
"%" PRIx32 ", %" PRIx32 ", %" PRIx32 ", %" PRIx32 ", "
"%" PRIx32 ", %" PRIx32 ", %" PRIx32 ", %" PRIx32 ", "
"%" PRIx32 ", %" PRIx32 ", %" PRIx32 ", %" PRIx32 ", "
"%" PRIx32 ", %" PRIx32 ", %" PRIx32 ", %" PRIx32,
&pu_palette[0], &pu_palette[1], &pu_palette[2], &pu_palette[3],
&pu_palette[4], &pu_palette[5], &pu_palette[6], &pu_palette[7],
&pu_palette[8], &pu_palette[9], &pu_palette[10], &pu_palette[11],
&pu_palette[12], &pu_palette[13], &pu_palette[14], &pu_palette[15] ) == 16 )
{
vobsub_palette_rgb2yuv( pu_palette );
return VLC_SUCCESS;
}
else
{
return VLC_EGENERIC;
}
}
static inline int vobsub_size_parse( const char *psz_buf,
int *pi_original_frame_width,
int *pi_original_frame_height )
{
if( sscanf( psz_buf, "size: %dx%d",
pi_original_frame_width, pi_original_frame_height ) == 2 )
{
return VLC_SUCCESS;
}
else
{
return VLC_EGENERIC;
}
}
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