Commit bf68c0fe authored by Antoine Cellerier's avatar Antoine Cellerier

noise video filter

parent 56fc9453
......@@ -561,7 +561,7 @@ AM_CONDITIONAL(BUILD_GETOPT, ${need_getopt})
if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
AC_TYPE_SIGNAL
AC_CHECK_LIB(m,cos,[
VLC_ADD_LDFLAGS([adjust wave ripple psychedelic gradient a52tofloat32 dtstofloat32 x264 goom visual panoramix rotate],[-lm])
VLC_ADD_LDFLAGS([adjust wave ripple psychedelic gradient a52tofloat32 dtstofloat32 x264 goom visual panoramix rotate noise],[-lm])
])
AC_CHECK_LIB(m,pow,[
VLC_ADD_LDFLAGS([ffmpeg ffmpegaltivec stream_out_transrate i420_rgb faad twolame equalizer param_eq vlc freetype mpc dmo quicktime realaudio galaktos],[-lm])
......@@ -1150,7 +1150,7 @@ dnl
VLC_ADD_PLUGINS([dummy logger memcpy])
VLC_ADD_PLUGINS([mpgv mpga m4v m4a h264 ps pva avi asf mp4 rawdv nsv real aiff mjpeg demuxdump flac])
VLC_ADD_PLUGINS([cvdsub svcdsub spudec subsdec dvbsub mpeg_audio lpcm a52 dts cinepak flacdec])
VLC_ADD_PLUGINS([deinterlace invert adjust transform wave ripple psychedelic gradient motionblur rv32 rotate])
VLC_ADD_PLUGINS([deinterlace invert adjust transform wave ripple psychedelic gradient motionblur rv32 rotate noise])
VLC_ADD_PLUGINS([fixed32tos16 s16tofixed32 u8tofixed32 mono])
VLC_ADD_PLUGINS([trivial_resampler ugly_resampler])
VLC_ADD_PLUGINS([trivial_channel_mixer trivial_mixer])
......
......@@ -24,4 +24,5 @@ SOURCES_panoramix = panoramix.c
SOURCES_opencv_wrapper = opencv_wrapper.c
SOURCES_opencv_example = opencv_example.cpp filter_event_info.h
SOURCES_rotate = rotate.c
SOURCES_noise = noise.c
noinst_HEADERS = filter_common.h
/*****************************************************************************
* noise.c : "add noise to image" video filter
*****************************************************************************
* Copyright (C) 2000-2006 the VideoLAN team
* $Id$
*
* Authors: Antoine Cellerier <dionoea -at- videolan -dot- 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 <stdlib.h> /* malloc(), free() */
#include <string.h>
#include <math.h> /* sin(), cos() */
#include <vlc/vlc.h>
#include <vlc/decoder.h>
#include "vlc_filter.h"
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Create ( vlc_object_t * );
static void Destroy ( vlc_object_t * );
static picture_t *Filter( filter_t *, picture_t * );
#define FILTER_PREFIX "noise-"
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin();
set_description( _("Noise video filter") );
set_shortname( _( "Noise" ));
set_capability( "video filter2", 0 );
set_category( CAT_VIDEO );
set_subcategory( SUBCAT_VIDEO_VFILTER );
add_shortcut( "noise" );
set_callbacks( Create, Destroy );
vlc_module_end();
static const char *ppsz_filter_options[] = {
NULL
};
/*****************************************************************************
* vout_sys_t: Distort video output method descriptor
*****************************************************************************
* This structure is part of the video output thread descriptor.
* It describes the Distort specific properties of an output thread.
*****************************************************************************/
struct filter_sys_t
{
mtime_t last_date;
};
/*****************************************************************************
* Create: allocates Distort video thread output method
*****************************************************************************
* This function allocates and initializes a Distort vout method.
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
/* Allocate structure */
p_filter->p_sys = malloc( sizeof( filter_sys_t ) );
if( p_filter->p_sys == NULL )
{
msg_Err( p_filter, "out of memory" );
return VLC_ENOMEM;
}
config_ChainParse( p_filter, FILTER_PREFIX, ppsz_filter_options,
p_filter->p_cfg );
p_filter->pf_video_filter = Filter;
p_filter->p_sys->last_date = 0;
return VLC_SUCCESS;
}
/*****************************************************************************
* Destroy: destroy Distort video thread output method
*****************************************************************************
* Terminate an output method created by DistortCreateOutputMethod
*****************************************************************************/
static void Destroy( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
free( p_filter->p_sys );
}
/*****************************************************************************
* Render: displays previously rendered output
*****************************************************************************
* This function send the currently rendered image to Distort image, waits
* until it is displayed and switch the two rendering buffers, preparing next
* frame.
*****************************************************************************/
static picture_t *Filter( filter_t *p_filter, picture_t *p_pic )
{
picture_t *p_outpic;
filter_sys_t *p_sys = p_filter->p_sys;
int i_index;
mtime_t new_date = mdate();
if( !p_pic ) return NULL;
p_outpic = p_filter->pf_vout_buffer_new( p_filter );
if( !p_outpic )
{
msg_Warn( p_filter, "can't get output picture" );
if( p_pic->pf_release )
p_pic->pf_release( p_pic );
return NULL;
}
p_sys->last_date = new_date;
for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
{
int i_line, i_num_lines, i_col, i_num_cols;
uint8_t black_pixel;
uint8_t *p_in, *p_out;
p_in = p_pic->p[i_index].p_pixels;
p_out = p_outpic->p[i_index].p_pixels;
i_num_lines = p_pic->p[i_index].i_visible_lines;
i_num_cols = p_pic->p[i_index].i_visible_pitch;
for( i_line = 0 ; i_line < i_num_lines ; i_line++ )
{
if( rand()%8 )
{
/* line isn't noisy */
p_filter->p_libvlc->pf_memcpy( p_out+i_line*i_num_cols,
p_in+i_line*i_num_cols,
i_num_cols );
}
else
{
/* this line is noisy */
int noise_level = rand()%8+2;
for( i_col = 0; i_col < i_num_cols ; i_col++ )
{
if( rand()%noise_level )
{
p_out[i_line*i_num_cols+i_col] =
p_in[i_line*i_num_cols+i_col];
}
else
{
p_out[i_line*i_num_cols+i_col] = (rand()%3)*0x7f;
}
}
}
}
}
p_outpic->date = p_pic->date;
p_outpic->b_force = p_pic->b_force;
p_outpic->i_nb_fields = p_pic->i_nb_fields;
p_outpic->b_progressive = p_pic->b_progressive;
p_outpic->b_top_field_first = p_pic->b_top_field_first;
if( p_pic->pf_release )
p_pic->pf_release( p_pic );
return p_outpic;
}
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