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/*****************************************************************************
* adjust.c: VDPAU colour adjust video filter
*****************************************************************************
* Copyright (C) 2013 Rémi Denis-Courmont
*
* 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.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#include <math.h>
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_filter.h>
#include <vlc_atomic.h>
#include "vlc_vdpau.h"
struct filter_sys_t
{
vlc_atomic_float brightness;
vlc_atomic_float contrast;
vlc_atomic_float saturation;
vlc_atomic_float hue;
};
static float vlc_to_vdp_brightness(float brightness)
{
brightness -= 1.f;
if (brightness > +1.f)
brightness = +1.f;
if (brightness < -1.f)
brightness = -1.f;
return brightness;
}
static int BrightnessCallback(vlc_object_t *obj, const char *varname,
vlc_value_t prev, vlc_value_t cur, void *data)
{
vlc_atomic_store_float(data, vlc_to_vdp_brightness(cur.f_float));
(void) obj; (void) varname; (void) prev;
return VLC_SUCCESS;
}
static float vlc_to_vdp_contrast(float contrast)
{
if (contrast > 10.f)
contrast = 10.f;
if (contrast < 0.f)
contrast = 0.f;
return contrast;
}
static int ContrastCallback(vlc_object_t *obj, const char *varname,
vlc_value_t prev, vlc_value_t cur, void *data)
{
vlc_atomic_store_float(data, vlc_to_vdp_contrast(cur.f_float));
(void) obj; (void) varname; (void) prev;
return VLC_SUCCESS;
}
#define vlc_to_vdp_saturation vlc_to_vdp_contrast
static int SaturationCallback(vlc_object_t *obj, const char *varname,
vlc_value_t prev, vlc_value_t cur, void *data)
{
vlc_atomic_store_float(data, vlc_to_vdp_saturation(cur.f_float));
(void) obj; (void) varname; (void) prev;
return VLC_SUCCESS;
}
static float vlc_to_vdp_hue(int hue)
{
hue %= 360;
if (hue > 180)
hue -= 360;
return (float)hue * (float)(M_PI / 180.);
}
static int HueCallback(vlc_object_t *obj, const char *varname,
vlc_value_t prev, vlc_value_t cur, void *data)
{
vlc_atomic_store_float(data, vlc_to_vdp_hue(cur.i_int));
(void) obj; (void) varname; (void) prev;
return VLC_SUCCESS;
}
static picture_t *Adjust(filter_t *filter, picture_t *pic)
{
filter_sys_t *sys = filter->p_sys;
vlc_vdp_video_field_t *f = pic->context;
if (unlikely(f == NULL))
return pic;
f->procamp.brightness = vlc_atomic_load_float(&sys->brightness);
f->procamp.contrast = vlc_atomic_load_float(&sys->contrast);
f->procamp.saturation = vlc_atomic_load_float(&sys->saturation);
f->procamp.hue = vlc_atomic_load_float(&sys->hue);
return pic;
}
static const char *const options[] = {
"brightness", "contrast", "saturation", "hue", NULL
};
static int Open(vlc_object_t *obj)
{
filter_t *filter = (filter_t *)obj;
if (filter->fmt_in.video.i_chroma != VLC_CODEC_VDPAU_VIDEO_422
&& filter->fmt_in.video.i_chroma != VLC_CODEC_VDPAU_VIDEO_420)
return VLC_EGENERIC;
if (!video_format_IsSimilar(&filter->fmt_in.video, &filter->fmt_out.video))
return VLC_EGENERIC;
filter_sys_t *sys = malloc(sizeof (*sys));
if (unlikely(sys == NULL))
return VLC_ENOMEM;
filter->pf_video_filter = Adjust;
filter->p_sys = sys;
config_ChainParse(filter, "", options, filter->p_cfg);
float f;
int i;
f = var_CreateGetFloatCommand(filter, "brightness");
var_AddCallback(filter, "brightness", BrightnessCallback,
&sys->brightness);
vlc_atomic_init_float(&sys->brightness, vlc_to_vdp_brightness(f));
f = var_CreateGetFloatCommand(filter, "contrast");
var_AddCallback(filter, "contrast", ContrastCallback, &sys->contrast);
vlc_atomic_init_float(&sys->contrast, vlc_to_vdp_contrast(f));
f = var_CreateGetFloatCommand(filter, "saturation");
var_AddCallback(filter, "saturation", SaturationCallback,
&sys->saturation);
vlc_atomic_init_float(&sys->saturation, vlc_to_vdp_saturation(f));
i = var_CreateGetIntegerCommand(filter, "hue");
var_AddCallback(filter, "hue", HueCallback, &sys->hue);
vlc_atomic_init_float(&sys->hue, vlc_to_vdp_hue(i));
return VLC_SUCCESS;
}
static void Close(vlc_object_t *obj)
{
filter_t *filter = (filter_t *)obj;
filter_sys_t *sys = filter->p_sys;
var_DelCallback(filter, "hue", HueCallback, &sys->hue);
var_DelCallback(filter, "saturation", SaturationCallback,
&sys->saturation);
var_DelCallback(filter, "contrast", ContrastCallback, &sys->contrast);
var_DelCallback(filter, "brightness", BrightnessCallback,
&sys->brightness);
free(sys);
}
vlc_module_begin()
set_description(N_("VDPAU adjust video filter"))
set_category(CAT_VIDEO)
set_subcategory(SUBCAT_VIDEO_VFILTER)
set_capability("video filter2", 0)
add_shortcut("adjust")
set_callbacks(Open, Close)
vlc_module_end()
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