Commit 3173ecbb authored by Sam Hocevar's avatar Sam Hocevar

* Simple grayscale -> yuv conversions.

parent 3a9ae14c
......@@ -1201,7 +1201,7 @@ VLC_ADD_PLUGINS([converter_fixed mono])
VLC_ADD_PLUGINS([trivial_resampler ugly_resampler])
VLC_ADD_PLUGINS([trivial_channel_mixer trivial_mixer])
VLC_ADD_PLUGINS([playlist export sgimb nsc xtag])
VLC_ADD_PLUGINS([i420_rgb rawvideo blend scale image logo magnify puzzle colorthres])
VLC_ADD_PLUGINS([i420_rgb grey_yuv rawvideo blend scale image logo magnify puzzle colorthres])
VLC_ADD_PLUGINS([wav araw subtitle vobsub adpcm a52sys dtssys au ty voc xa nuv])
VLC_ADD_PLUGINS([access_directory access_file access_udp access_tcp])
VLC_ADD_PLUGINS([access_http access_mms access_ftp])
......
......@@ -58,3 +58,7 @@ SOURCES_i420_ymga_mmx = \
i420_ymga.c \
$(NULL)
SOURCES_grey_yuv = \
grey_yuv.c \
$(NULL)
/*****************************************************************************
* grey_yuv.c : grayscale to others conversion module for vlc
*****************************************************************************
* Copyright (C) 2007 the VideoLAN team
* $Id$
*
* Authors: Sam Hocevar <sam@zoy.org>
*
* 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <string.h> /* strerror() */
#include <stdlib.h> /* malloc(), free() */
#include <vlc/vlc.h>
#include <vlc_vout.h>
#define SRC_FOURCC "GREY"
#define DEST_FOURCC "I420,YUY2"
/*****************************************************************************
* Local and extern prototypes.
*****************************************************************************/
static int Activate ( vlc_object_t * );
static void GREY_I420 ( vout_thread_t *, picture_t *, picture_t * );
static void GREY_YUY2 ( vout_thread_t *, picture_t *, picture_t * );
/*****************************************************************************
* Module descriptor.
*****************************************************************************/
vlc_module_begin();
set_description( _("Conversions from " SRC_FOURCC " to " DEST_FOURCC) );
set_capability( "chroma", 80 );
set_callbacks( Activate, NULL );
vlc_module_end();
/*****************************************************************************
* Activate: allocate a chroma function
*****************************************************************************
* This function allocates and initializes a chroma function
*****************************************************************************/
static int Activate( vlc_object_t *p_this )
{
vout_thread_t *p_vout = (vout_thread_t *)p_this;
if( p_vout->render.i_width & 1 || p_vout->render.i_height & 1 )
{
return -1;
}
switch( p_vout->render.i_chroma )
{
case VLC_FOURCC('G','R','E','Y'):
switch( p_vout->output.i_chroma )
{
case VLC_FOURCC('I','4','2','0'):
p_vout->chroma.pf_convert = GREY_I420;
break;
case VLC_FOURCC('Y','U','Y','2'):
p_vout->chroma.pf_convert = GREY_YUY2;
break;
default:
return -1;
}
break;
default:
return -1;
}
return 0;
}
/* Following functions are local */
/*****************************************************************************
* GREY_I420: 8-bit grayscale to planar YUV 4:2:0
*****************************************************************************/
static void GREY_I420( vout_thread_t *p_vout, picture_t *p_source,
picture_t *p_dest )
{
uint8_t *p_line = p_source->p->p_pixels;
uint8_t *p_y = p_dest->Y_PIXELS;
uint8_t *p_u = p_dest->U_PIXELS;
uint8_t *p_v = p_dest->V_PIXELS;
int i_x, i_y;
const int i_source_margin = p_source->p->i_pitch
- p_source->p->i_visible_pitch;
const int i_dest_margin = p_dest->p[0].i_pitch
- p_dest->p[0].i_visible_pitch;
const int i_dest_margin_c = p_dest->p[1].i_pitch
- p_dest->p[1].i_visible_pitch;
for( i_y = p_vout->render.i_height / 2; i_y-- ; )
{
memset(p_u, 0x80, p_dest->p[1].i_visible_pitch);
p_u += i_dest_margin_c;
memset(p_v, 0x80, p_dest->p[1].i_visible_pitch);
p_v += i_dest_margin_c;
}
for( i_y = p_vout->render.i_height; i_y-- ; )
{
for( i_x = p_vout->render.i_width / 8; i_x-- ; )
{
*p_y++ = *p_line++; *p_y++ = *p_line++;
*p_y++ = *p_line++; *p_y++ = *p_line++;
*p_y++ = *p_line++; *p_y++ = *p_line++;
*p_y++ = *p_line++; *p_y++ = *p_line++;
}
for( i_x = p_vout->render.i_width % 8; i_x-- ; )
{
*p_y++ = *p_line++;
}
p_line += i_source_margin;
p_y += i_dest_margin;
}
}
/*****************************************************************************
* GREY_YUY2: 8-bit grayscale to packed YUY2
*****************************************************************************/
static void GREY_YUY2( vout_thread_t *p_vout, picture_t *p_source,
picture_t *p_dest )
{
uint8_t *p_in = p_source->p->p_pixels;
uint8_t *p_out = p_dest->p->p_pixels;
int i_x, i_y;
const int i_source_margin = p_source->p->i_pitch
- p_source->p->i_visible_pitch;
const int i_dest_margin = p_dest->p->i_pitch
- p_dest->p->i_visible_pitch;
for( i_y = p_vout->render.i_height; i_y-- ; )
{
for( i_x = p_vout->render.i_width / 8; i_x-- ; )
{
*p_out++ = *p_in++; *p_out++ = 0x80;
*p_out++ = *p_in++; *p_out++ = 0x80;
*p_out++ = *p_in++; *p_out++ = 0x80;
*p_out++ = *p_in++; *p_out++ = 0x80;
*p_out++ = *p_in++; *p_out++ = 0x80;
*p_out++ = *p_in++; *p_out++ = 0x80;
*p_out++ = *p_in++; *p_out++ = 0x80;
*p_out++ = *p_in++; *p_out++ = 0x80;
}
for( i_x = (p_vout->render.i_width % 8) / 2; i_x-- ; )
{
*p_out++ = *p_in++; *p_out++ = 0x80;
*p_out++ = *p_in++; *p_out++ = 0x80;
}
p_in += i_source_margin;
p_out += i_dest_margin;
}
}
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