Commit 4322d421 authored by Vianney Boyer's avatar Vianney Boyer Committed by Jean-Baptiste Kempf

Oldmovie: Oldmovie style video filter

Signed-off-by: Jean-Baptiste Kempf's avatarJean-Baptiste Kempf <jb@videolan.org>
parent 84fd16d6
......@@ -8,6 +8,9 @@ Access:
Video Output:
* Direct rendering and filtering for VDPAU hardware acceleration
Video Filter:
* New Oldmovie effect filter
Removed modules:
* ios video output: use ios2
......
......@@ -231,6 +231,7 @@ $Id$
* ntservice: run VLC as a NT service
* nuv: NUV demuxer
* ogg: input module for OGG decapsulation
* oldmovie: oldmovie style video filter
* oldrc: old interface module using stdio
* omxil: OpenMAX IL audio/video decoder
* omxil_vout: OpenMAX IL video output
......
......@@ -133,6 +133,7 @@ SOURCES_gradfun = gradfun.c gradfun.h
SOURCES_subsdelay = subsdelay.c
SOURCES_hqdn3d = hqdn3d.c hqdn3d.h
SOURCES_anaglyph = anaglyph.c
SOURCES_oldmovie = oldmovie.c
noinst_HEADERS = filter_picture.h
libvlc_LTLIBRARIES += \
......@@ -175,4 +176,6 @@ libvlc_LTLIBRARIES += \
libyuvp_plugin.la \
libantiflicker_plugin.la \
libhqdn3d_plugin.la \
libanaglyph_plugin.la
libanaglyph_plugin.la \
liboldmovie_plugin.la
/*****************************************************************************
* oldmovie.c : Old movie effect video filter
*****************************************************************************
* Copyright (C) 2013 Vianney Boyer
* $Id$
*
* Authors: Vianney Boyer <vlcvboyer -at- gmail -dot- com>
*
* 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.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <math.h>
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_filter.h>
#include <vlc_rand.h>
#include <vlc_mtime.h>
#include "filter_picture.h"
#ifndef M_PI
# define M_PI 3.14159265358979323846
#endif
#ifndef TIME_UNIT_PER_S
# define TIME_UNIT_PER_S ( ((int64_t) 1) << 32 )
#endif
static inline int64_t MOD(int64_t a, int64_t b) {
return ( ( a % b ) + b ) % b; }
#define SUB_MIN(val, sub_val, min) val = \
((val-(int32_t)sub_val)<min?min:val-sub_val)
#define ADD_MAX(val, add_val, max) val = \
((val+(int32_t)add_val)>max?max:val+add_val)
static inline int32_t PIX_OFS(int32_t i_x, int32_t i_y, plane_t *ps_plane) {
return i_x * ps_plane->i_pixel_pitch + i_y * ps_plane->i_pitch; }
#define CHECK_PIX_OFS(i_x, i_y, ps_plane) ( \
(i_x) >= 0 && (i_y) >= 0 && \
(i_x) * ps_plane->i_pixel_pitch < ps_plane->i_visible_pitch && \
(i_y) < ps_plane->i_visible_lines \
)
static inline void DARKEN_PIXEL(int32_t i_x, int32_t i_y,
int16_t intensity, plane_t *ps_plane) {
SUB_MIN( ps_plane->p_pixels[ PIX_OFS(i_x, i_y, ps_plane) ],
intensity, 0 );
}
static inline void LIGHTEN_PIXEL(int32_t i_x, int32_t i_y,
int16_t intensity, plane_t *ps_plane) {
ADD_MAX( ps_plane->p_pixels[ PIX_OFS(i_x, i_y, ps_plane) ],
intensity, 0xFF );
}
static inline void CHECK_N_DARKEN_PIXEL(int32_t i_x, int32_t i_y,
int16_t intensity, plane_t *ps_plane) {
if ( likely( CHECK_PIX_OFS(i_x, i_y, ps_plane) ) )
DARKEN_PIXEL(i_x, i_y, intensity, ps_plane);
}
static inline void CHECK_N_LIGHTEN_PIXEL(int32_t i_x, int32_t i_y,
int16_t intensity, plane_t *ps_plane) {
if ( likely( CHECK_PIX_OFS(i_x, i_y, ps_plane) ) )
LIGHTEN_PIXEL(i_x, i_y, intensity, ps_plane);
}
#define MAX_SCRATCH 20
#define MAX_HAIR 10
#define MAX_DUST 10
typedef struct {
int32_t i_offset;
int32_t i_width;
uint16_t i_intensity;
uint64_t i_stop_trigger;
} scratch_t;
typedef struct {
int32_t i_x, i_y;
uint8_t i_rotation;
int32_t i_width;
int32_t i_length;
int32_t i_curve;
uint16_t i_intensity;
uint64_t i_stop_trigger;
} hair_t;
typedef struct {
int32_t i_x, i_y;
int32_t i_width;
uint16_t i_intensity;
uint64_t i_stop_trigger;
} dust_t;
struct filter_sys_t {
/* general data */
bool b_init;
int32_t i_planes;
int32_t *i_height;
int32_t *i_width;
int32_t *i_visible_pitch;
uint64_t i_start_time;
uint64_t i_last_time;
uint64_t i_cur_time;
/* sliding & offset effect */
uint64_t i_offset_trigger;
uint64_t i_sliding_trigger;
uint64_t i_sliding_stop_trig;
int32_t i_offset_ofs;
int32_t i_sliding_ofs;
int32_t i_sliding_speed;
/* scratch on film */
uint64_t i_scratch_trigger;
scratch_t *p_scratch[MAX_SCRATCH];
/* hair on lens */
uint64_t i_hair_trigger;
hair_t *p_hair[MAX_HAIR];
/* blotch on film */
uint64_t i_blotch_trigger;
/* dust on lens */
uint64_t i_dust_trigger;
dust_t *p_dust[MAX_DUST];
};
/*****************************************************************************
* Prototypes
*****************************************************************************/
picture_t *Filter( filter_t *, picture_t * );
int oldmovie_allocate_data( filter_t *, picture_t * );
void oldmovie_free_allocated_data( filter_t * );
void oldmovie_shutter_effect( filter_t *, picture_t * );
int oldmovie_sliding_offset_effect( filter_t *, picture_t * );
void oldmovie_black_n_white_effect( picture_t * );
int oldmovie_dark_border_effect( filter_t *, picture_t * );
int oldmovie_film_scratch_effect( filter_t *, picture_t * );
void oldmovie_film_blotch_effect( filter_t *, picture_t * );
void oldmovie_film_dust_effect( filter_t *, picture_t * );
int oldmovie_lens_hair_effect( filter_t *, picture_t * );
int oldmovie_lens_dust_effect( filter_t *, picture_t * );
void oldmovie_define_hair_location( filter_t *p_filter, hair_t* ps_hair );
void oldmovie_define_dust_location( filter_t *p_filter, dust_t* ps_dust );
int oldmovie_sliding_offset_apply( filter_t *p_filter, picture_t *p_pic_out );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
int Open ( vlc_object_t * );
void Close( vlc_object_t * );
vlc_module_begin()
set_description( N_("Old movie effect video filter") )
set_shortname( N_( "Old movie" ))
set_capability( "video filter2", 0 )
set_category( CAT_VIDEO )
set_subcategory( SUBCAT_VIDEO_VFILTER )
set_callbacks( Open, Close )
vlc_module_end()
/**
* Open the filter
*/
int Open( vlc_object_t *p_this ) {
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys;
/* Assert video in match with video out */
if( !es_format_IsSimilar( &p_filter->fmt_in, &p_filter->fmt_out ) ) {
msg_Err( p_filter, "Input and output format does not match" );
return VLC_EGENERIC;
}
/* Reject 0 bpp and unsupported chroma */
const vlc_fourcc_t fourcc = p_filter->fmt_in.video.i_chroma;
const vlc_chroma_description_t *p_chroma =
vlc_fourcc_GetChromaDescription( p_filter->fmt_in.video.i_chroma );
if( !p_chroma || p_chroma->pixel_size == 0
|| p_chroma->plane_count < 3 || p_chroma->pixel_size > 1
|| !vlc_fourcc_IsYUV( fourcc ) ) {
msg_Err( p_filter, "Unsupported chroma (%4.4s)", (char*)&fourcc );
return VLC_EGENERIC;
}
/* Allocate structure */
p_filter->p_sys = p_sys = calloc( 1, sizeof(*p_sys) );
if( unlikely( !p_sys ) )
return VLC_ENOMEM;
/* init data */
p_filter->pf_video_filter = Filter;
p_sys->i_start_time = p_sys->i_cur_time = p_sys->i_last_time = NTPtime64();
return VLC_SUCCESS;
}
/**
* Close the filter
*/
void Close( vlc_object_t *p_this ) {
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys = p_filter->p_sys;
/* Free allocated memory */
oldmovie_free_allocated_data( p_filter );
free( p_sys );
}
/**
* Filter a picture
*/
picture_t *Filter( filter_t *p_filter, picture_t *p_pic_in ) {
if( unlikely( !p_pic_in || !p_filter ) )
return NULL;
filter_sys_t *p_sys = p_filter->p_sys;
picture_t *p_pic_out = filter_NewPicture( p_filter );
if( unlikely( !p_pic_out ) ) {
picture_Release( p_pic_in );
return NULL;
}
/*
* manage time
*/
p_sys->i_last_time = p_sys->i_cur_time;
p_sys->i_cur_time = NTPtime64();
/*
* allocate data
*/
if ( unlikely( !p_sys->b_init ) )
if ( unlikely( oldmovie_allocate_data( p_filter, p_pic_in ) != VLC_SUCCESS ) ) {
picture_Release( p_pic_in );
return NULL;
}
p_sys->b_init = true;
/*
* preset output pic: raw copy src to dst
*/
picture_CopyPixels(p_pic_out, p_pic_in);
/*
* apply several effects on picture
*/
oldmovie_black_n_white_effect( p_pic_out );
/* simulates projector shutter blinking effect */
oldmovie_shutter_effect(p_filter, p_pic_out);
if ( unlikely( oldmovie_sliding_offset_effect( p_filter, p_pic_out ) != VLC_SUCCESS ) )
return CopyInfoAndRelease( p_pic_out, p_pic_in );
oldmovie_dark_border_effect( p_filter, p_pic_out );
if ( unlikely( oldmovie_film_scratch_effect(p_filter, p_pic_out) != VLC_SUCCESS ) )
return CopyInfoAndRelease( p_pic_out, p_pic_in );
oldmovie_film_blotch_effect(p_filter, p_pic_out);
if ( unlikely( oldmovie_lens_hair_effect( p_filter, p_pic_out ) != VLC_SUCCESS ) )
return CopyInfoAndRelease( p_pic_out, p_pic_in );
if ( unlikely( oldmovie_lens_dust_effect( p_filter, p_pic_out ) != VLC_SUCCESS ) )
return CopyInfoAndRelease( p_pic_out, p_pic_in );
oldmovie_film_dust_effect( p_filter, p_pic_out );
return CopyInfoAndRelease( p_pic_out, p_pic_in );
}
/*
* Allocate data
*/
int oldmovie_allocate_data( filter_t *p_filter, picture_t *p_pic_in ) {
filter_sys_t *p_sys = p_filter->p_sys;
oldmovie_free_allocated_data( p_filter );
/*
* take into account different characteristics for each plane
*/
p_sys->i_planes = p_pic_in->i_planes;
p_sys->i_height = calloc( p_sys->i_planes, sizeof(int32_t) );
p_sys->i_width = calloc( p_sys->i_planes, sizeof(int32_t) );
p_sys->i_visible_pitch = calloc( p_sys->i_planes, sizeof(int32_t) );
if( unlikely( !p_sys->i_height || !p_sys->i_width || !p_sys->i_visible_pitch ) ) {
oldmovie_free_allocated_data( p_filter );
return VLC_ENOMEM;
}
for (int32_t i_p=0; i_p < p_sys->i_planes; i_p++) {
p_sys->i_visible_pitch [i_p] = (int) p_pic_in->p[i_p].i_visible_pitch;
p_sys->i_height[i_p] = (int) p_pic_in->p[i_p].i_visible_lines;
p_sys->i_width [i_p] = (int) p_pic_in->p[i_p].i_visible_pitch
/ p_pic_in->p[i_p].i_pixel_pitch;
}
return VLC_SUCCESS;
}
/**
* Free allocated data
*/
void oldmovie_free_allocated_data( filter_t *p_filter ) {
filter_sys_t *p_sys = p_filter->p_sys;
for ( uint32_t i_s = 0; i_s < MAX_SCRATCH; i_s++ )
FREENULL(p_sys->p_scratch[i_s]);
for ( uint32_t i_h = 0; i_h < MAX_HAIR; i_h++ )
FREENULL(p_sys->p_hair[i_h]);
for ( uint32_t i_d = 0; i_d < MAX_DUST; i_d++ )
FREENULL(p_sys->p_dust[i_d]);
p_sys->i_planes = 0;
FREENULL( p_sys->i_height );
FREENULL( p_sys->i_width );
FREENULL( p_sys->i_visible_pitch );
}
/**
* Projector shutter effect
*/
void oldmovie_shutter_effect( filter_t *p_filter, picture_t *p_pic_out ) {
filter_sys_t *p_sys = p_filter->p_sys;
#define SHUTTER_FREQ 2
#define SHUTTER_SPEED 25
#define SHUTTER_HEIGHT 1.5
#define SHUTTER_INTENSITY 50
#define SUB_FRAME (p_sys->i_cur_time % (TIME_UNIT_PER_S / SHUTTER_FREQ))
/*
* depending on current time: define shutter location on picture
*/
int32_t i_shutter_sup = VLC_CLIP((int64_t)SUB_FRAME
* p_pic_out->p[Y_PLANE].i_visible_lines
* SHUTTER_SPEED / TIME_UNIT_PER_S,
0, p_pic_out->p[Y_PLANE].i_visible_lines);
int32_t i_shutter_inf = VLC_CLIP((int64_t)SUB_FRAME
* p_pic_out->p[Y_PLANE].i_visible_lines
* SHUTTER_SPEED / TIME_UNIT_PER_S
- SHUTTER_HEIGHT * p_pic_out->p[Y_PLANE].i_visible_lines,
0, p_pic_out->p[Y_PLANE].i_visible_lines);
int32_t i_width = p_pic_out->p[Y_PLANE].i_visible_pitch
/ p_pic_out->p[Y_PLANE].i_pixel_pitch;
/*
* darken pixels currently occulted by shutter
*/
for ( int32_t i_y = i_shutter_inf; i_y < i_shutter_sup; i_y++ )
for ( int32_t i_x = 0; i_x < i_width; i_x++ )
DARKEN_PIXEL( i_x, i_y, SHUTTER_INTENSITY, &p_pic_out->p[Y_PLANE] );
}
/**
* sliding & offset effect
*/
int oldmovie_sliding_offset_effect( filter_t *p_filter, picture_t *p_pic_out ) {
filter_sys_t *p_sys = p_filter->p_sys;
/**
* one shot offset section
*/
#define OFFSET_AVERAGE_PERIOD (10 * TIME_UNIT_PER_S)
/* start trigger to be (re)initialized */
if ( p_sys->i_offset_trigger == 0
|| p_sys->i_sliding_speed != 0 ) { /* do not mix sliding and offset */
/* random trigger for offset effect */
p_sys->i_offset_trigger = p_sys->i_cur_time
+ ( (uint64_t) vlc_mrand48() ) % OFFSET_AVERAGE_PERIOD
+ OFFSET_AVERAGE_PERIOD / 2;
p_sys->i_offset_ofs = 0;
} else if ( p_sys->i_offset_trigger <= p_sys->i_cur_time ) {
/* trigger for offset effect */
p_sys->i_offset_trigger = 0;
p_sys->i_offset_ofs = MOD( ( (uint32_t)vlc_mrand48() ),
p_sys->i_height[Y_PLANE] ) * 100;
} else
p_sys->i_offset_ofs = 0;
/**
* sliding section
*/
#define SLIDING_AVERAGE_PERIOD (20 * TIME_UNIT_PER_S)
#define SLIDING_AVERAGE_DURATION ( 3 * TIME_UNIT_PER_S)
/* start trigger to be (re)initialized */
if ( ( p_sys->i_sliding_stop_trig == 0 )
&& ( p_sys->i_sliding_trigger == 0 )
&& ( p_sys->i_sliding_speed == 0 ) ) {
/* random trigger which enable sliding effect */
p_sys->i_sliding_trigger = p_sys->i_cur_time
+ ( (uint64_t) vlc_mrand48() ) % SLIDING_AVERAGE_PERIOD
+ SLIDING_AVERAGE_PERIOD / 2;
}
/* start trigger just occurs */
else if ( ( p_sys->i_sliding_stop_trig == 0 )
&& ( p_sys->i_sliding_trigger <= p_sys->i_cur_time )
&& ( p_sys->i_sliding_speed == 0 ) ) {
/* init sliding parameters */
p_sys->i_sliding_trigger = 0;
p_sys->i_sliding_stop_trig = p_sys->i_cur_time
+ ((uint64_t) vlc_mrand48() ) % SLIDING_AVERAGE_DURATION
+ SLIDING_AVERAGE_DURATION / 2;
p_sys->i_sliding_ofs = 0;
/* note: sliding speed unit = image per 100 s */
p_sys->i_sliding_speed = MOD(((int32_t) vlc_mrand48() ), 201) - 100;
}
/* stop trigger disabling sliding effect */
else if ( ( p_sys->i_sliding_stop_trig <= p_sys->i_cur_time )
&& ( p_sys->i_sliding_trigger == 0 ) ) {
/* first increase speed to ensure we will come back to stable image */
if ( abs(p_sys->i_sliding_speed) < 50 )
p_sys->i_sliding_speed += 5;
/* check if offset is close to 0 and then ready to stop */
if ( abs( p_sys->i_sliding_ofs ) < abs( p_sys->i_sliding_speed
* p_sys->i_height[Y_PLANE]
* ( p_sys->i_cur_time - p_sys->i_last_time ) / TIME_UNIT_PER_S )
|| abs( p_sys->i_sliding_ofs ) < p_sys->i_height[Y_PLANE] * 100 / 20 ) {
/* reset sliding parameters */
p_sys->i_sliding_ofs = p_sys->i_sliding_speed = 0;
p_sys->i_sliding_trigger = p_sys->i_sliding_stop_trig = 0;
}
}
/* update offset */
p_sys->i_sliding_ofs += p_sys->i_sliding_speed * p_sys->i_height[Y_PLANE]
* ( p_sys->i_cur_time - p_sys->i_last_time )
/ TIME_UNIT_PER_S;
p_sys->i_sliding_ofs = MOD( p_sys->i_sliding_ofs,
p_sys->i_height[Y_PLANE] * 100 );
/* apply offset */
return oldmovie_sliding_offset_apply( p_filter, p_pic_out );
}
/**
* apply both sliding and offset effect
*/
int oldmovie_sliding_offset_apply( filter_t *p_filter, picture_t *p_pic_out )
{
filter_sys_t *p_sys = p_filter->p_sys;
for ( uint8_t i_p = 0; i_p < p_pic_out->i_planes; i_p++ ) {
/* first allocate temporary buffer for swap operation */
uint8_t *p_temp_buf = calloc( p_pic_out->p[i_p].i_lines * p_pic_out->p[i_p].i_pitch,
sizeof(uint8_t) );
if ( unlikely( !p_temp_buf ) )
return VLC_ENOMEM;
memcpy( p_temp_buf,p_pic_out->p[i_p].p_pixels,
p_pic_out->p[i_p].i_lines * p_pic_out->p[i_p].i_pitch );
/* copy lines to output_pic */
for ( int32_t i_y = 0; i_y < p_pic_out->p[i_p].i_visible_lines; i_y++ ) {
int32_t i_ofs = MOD( ( p_sys->i_offset_ofs + p_sys->i_sliding_ofs )
/100,
p_sys->i_height[Y_PLANE] );
i_ofs *= p_pic_out->p[i_p].i_visible_lines;
i_ofs /= p_sys->i_height[Y_PLANE];
memcpy( &p_pic_out->p[i_p].p_pixels[ i_y * p_pic_out->p[i_p].i_pitch ],
&p_temp_buf[ ( ( i_y + i_ofs ) % p_pic_out->p[i_p].i_visible_lines ) * p_pic_out->p[i_p].i_pitch ],
p_pic_out->p[i_p].i_visible_pitch);
}
free( p_temp_buf );
}
return VLC_SUCCESS;
}
/**
* Black and white transform including a touch of sepia effect
*/
void oldmovie_black_n_white_effect( picture_t *p_pic_out )
{
for ( int32_t i_y = 0; i_y < p_pic_out->p[Y_PLANE].i_visible_lines; i_y++ )
for ( int32_t i_x = 0; i_x < p_pic_out->p[Y_PLANE].i_visible_pitch;
i_x += p_pic_out->p[Y_PLANE].i_pixel_pitch ) {
uint32_t i_pix_ofs = i_x+i_y*p_pic_out->p[Y_PLANE].i_pitch;
p_pic_out->p[Y_PLANE].p_pixels[i_pix_ofs] -= p_pic_out->p[Y_PLANE].p_pixels[i_pix_ofs] >> 2;
p_pic_out->p[Y_PLANE].p_pixels[i_pix_ofs] += 30;
}
memset( p_pic_out->p[U_PLANE].p_pixels, 122,
p_pic_out->p[U_PLANE].i_lines * p_pic_out->p[U_PLANE].i_pitch );
memset( p_pic_out->p[V_PLANE].p_pixels, 132,
p_pic_out->p[V_PLANE].i_lines * p_pic_out->p[V_PLANE].i_pitch );
}
/**
* Smooth darker borders effect
*/
int oldmovie_dark_border_effect( filter_t *p_filter, picture_t *p_pic_out )
{
filter_sys_t *p_sys = p_filter->p_sys;
#define BORDER_DIST 20
for ( int32_t i_y = 0; i_y < p_sys->i_height[Y_PLANE]; i_y++ )
for ( int32_t i_x = 0; i_x < p_sys->i_width[Y_PLANE]; i_x++ ) {
int32_t i_x_border_dist = __MIN( i_x, p_sys->i_width[Y_PLANE] - i_x);
int32_t i_y_border_dist = __MIN( i_y, p_sys->i_height[Y_PLANE] - i_y);
int32_t i_border_dist = __MAX(BORDER_DIST - i_x_border_dist,0)
+ __MAX(BORDER_DIST - i_y_border_dist,0);
i_border_dist = __MIN(BORDER_DIST, i_border_dist);
if ( i_border_dist == 0 )
continue;
uint32_t i_pix_ofs = i_x * p_pic_out->p[Y_PLANE].i_pixel_pitch
+ i_y * p_pic_out->p[Y_PLANE].i_pitch;
SUB_MIN( p_pic_out->p[Y_PLANE].p_pixels[i_pix_ofs],
i_border_dist * 255 / BORDER_DIST, 0 );
}
return VLC_SUCCESS;
}
/**
* Vertical scratch random management and effect
*/
int oldmovie_film_scratch_effect( filter_t *p_filter, picture_t *p_pic_out )
{
filter_sys_t *p_sys = p_filter->p_sys;
#define SCRATCH_GENERATOR_PERIOD ( TIME_UNIT_PER_S * 2 )
#define SCRATCH_DURATION ( TIME_UNIT_PER_S * 1 / 2)
/* generate new scratch */
if ( p_sys->i_scratch_trigger <= p_sys->i_cur_time ) {
for ( uint32_t i_s = 0; i_s < MAX_SCRATCH; i_s++ )
if ( p_sys->p_scratch[i_s] == NULL ) {
/* allocate data */
p_sys->p_scratch[i_s] = calloc( 1, sizeof(scratch_t) );
if ( unlikely( !p_sys->p_scratch[i_s] ) )
return VLC_ENOMEM;
/* set random parameters */
p_sys->p_scratch[i_s]->i_offset = ( ( (unsigned)vlc_mrand48() )
% __MAX( p_sys->i_width[Y_PLANE] - 10, 1 ) )
+ 5;
p_sys->p_scratch[i_s]->i_width = ( ( (unsigned)vlc_mrand48() )
% __MAX( p_sys->i_width[Y_PLANE] / 500, 1 ) )
+ 1;
p_sys->p_scratch[i_s]->i_intensity = (unsigned) vlc_mrand48() % 50 + 10;
p_sys->p_scratch[i_s]->i_stop_trigger = p_sys->i_cur_time
+ (uint64_t) vlc_mrand48() % SCRATCH_DURATION
+ SCRATCH_DURATION / 2;
break;
}
p_sys->i_scratch_trigger = p_sys->i_cur_time
+ ( (uint64_t)vlc_mrand48() ) % SCRATCH_GENERATOR_PERIOD
+ SCRATCH_GENERATOR_PERIOD / 2;
}
/* manage and apply current scratch */
for ( uint32_t i_s = 0; i_s < MAX_SCRATCH; i_s++ )
if ( p_sys->p_scratch[i_s] ) {
/* remove outdated scratch */
if ( p_sys->p_scratch[i_s]->i_stop_trigger <= p_sys->i_cur_time ) {
FREENULL( p_sys->p_scratch[i_s] );
continue;
}
/* otherwise apply scratch */
for ( int32_t i_y = 0; i_y < p_pic_out->p[Y_PLANE].i_visible_lines; i_y++ )
for ( int32_t i_x = p_sys->p_scratch[i_s]->i_offset;
i_x < __MIN(p_sys->p_scratch[i_s]->i_offset
+ p_sys->p_scratch[i_s]->i_width, p_sys->i_width[Y_PLANE] );
i_x++ )
DARKEN_PIXEL( i_x, i_y, p_sys->p_scratch[i_s]->i_intensity,
&p_pic_out->p[Y_PLANE] );
}
return VLC_SUCCESS;
}
/**
* Blotch addition
* bigger than dust but only during one frame (due to a local film damage)
*/
void oldmovie_film_blotch_effect( filter_t *p_filter, picture_t *p_pic_out )
{
filter_sys_t *p_sys = p_filter->p_sys;
#define BLOTCH_GENERATOR_PERIOD ( TIME_UNIT_PER_S * 5 )
/* generate blotch */
if ( p_sys->i_blotch_trigger <= p_sys->i_cur_time ) {
/* set random parameters */
int32_t i_bx = (unsigned)vlc_mrand48() % p_sys->i_width[Y_PLANE];
int32_t i_by = (unsigned)vlc_mrand48() % p_sys->i_height[Y_PLANE];
int32_t i_width = (unsigned)vlc_mrand48() % __MAX( 1, p_sys->i_width[Y_PLANE] / 10 ) + 1;
int32_t i_intensity = (unsigned)vlc_mrand48() % 50 + 20;
if ( (unsigned)vlc_mrand48() & 0x01 ) {
/* draw dark blotch */
for ( int32_t i_y = -i_width + 1; i_y < i_width; i_y++ )
for ( int32_t i_x = -i_width + 1; i_x < i_width; i_x++ )
if ( i_x * i_x + i_y * i_y <= i_width * i_width )
CHECK_N_DARKEN_PIXEL( i_x + i_bx, i_y + i_by,
i_intensity, &p_pic_out->p[Y_PLANE] );
} else {
/* draw light blotch */
for ( int32_t i_y = -i_width+1; i_y < i_width; i_y++ )
for ( int32_t i_x = -i_width+1; i_x < i_width; i_x++ )
if ( i_x * i_x + i_y * i_y <= i_width * i_width )
CHECK_N_LIGHTEN_PIXEL( i_x + i_bx, i_y + i_by,
i_intensity, &p_pic_out->p[Y_PLANE] );
}
p_sys->i_blotch_trigger = p_sys->i_cur_time
+ (uint64_t)vlc_mrand48() % BLOTCH_GENERATOR_PERIOD
+ BLOTCH_GENERATOR_PERIOD / 2;
}
}
/**
* Dust dots addition, visible during one frame only (film damages)
*/
void oldmovie_film_dust_effect( filter_t *p_filter, picture_t *p_pic_out ) {
#define ONESHOT_DUST_RATIO 1000
filter_sys_t *p_sys = p_filter->p_sys;
for ( int32_t i_dust = 0;
i_dust < p_sys->i_width[Y_PLANE] * p_sys->i_height[Y_PLANE] / ONESHOT_DUST_RATIO;
i_dust++)