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/* deblock.c
Copyright (c) 2003-2015 HandBrake Team
This file is part of the HandBrake source code
Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License v2.
For full terms see the file COPYING file or visit http://www.gnu.org/licenses/gpl-2.0.html
*/
#include "handbrake/common.h"
#include "handbrake/avfilter_priv.h"
static int deblock_init(hb_filter_object_t * filter, hb_filter_init_t * init);
const char deblock_template[] =
"strength=^"HB_ALL_REG"$:thresh=^"HB_INT_REG"$:blocksize=^"HB_INT_REG"$:"
"disable=^"HB_BOOL_REG"$";
hb_filter_object_t hb_filter_deblock =
{
.id = HB_FILTER_DEBLOCK,
.enforce_order = 1,
.skip = 1,
.name = "Deblock",
.settings = NULL,
.init = deblock_init,
.work = hb_avfilter_null_work,
.close = hb_avfilter_alias_close,
.settings_template = deblock_template,
};
/* Deblock presets and tunes
*
* There are currently no presets and tunes for deblock
* The custom deblock string is converted to an avformat filter graph string
*/
static int deblock_init(hb_filter_object_t * filter, hb_filter_init_t * init)
{
hb_filter_private_t * pv = NULL;
pv = calloc(1, sizeof(struct hb_filter_private_s));
filter->private_data = pv;
if (pv == NULL)
{
return 1;
}
pv->input = *init;
hb_dict_t * settings = filter->settings;
int thresh = -1, blocksize = 8;
char * strength = NULL;
hb_dict_extract_string(&strength, settings, "strength");
hb_dict_extract_int(&thresh, settings, "thresh");
hb_dict_extract_int(&blocksize, settings, "blocksize");
hb_dict_t * avfilter = hb_dict_init();
hb_dict_t * avsettings = hb_dict_init();
if (strength != NULL)
{
hb_dict_set_string(avsettings, "filter", strength);
free(strength);
}
hb_dict_set_int(avsettings, "block", blocksize);
if (thresh > 0)
{
double alpha, beta, gamma, delta;
alpha = thresh * 0.010;
beta = gamma = delta = alpha / 2;
hb_dict_set_double(avsettings, "alpha", alpha);
hb_dict_set_double(avsettings, "beta", beta);
hb_dict_set_double(avsettings, "gamma", gamma);
hb_dict_set_double(avsettings, "delta", delta);
}
hb_dict_set(avfilter, "deblock", avsettings);
pv->avfilters = avfilter;
pv->output = *init;
return 0;
}
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