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/* param.c
*
* Copyright (c) 2003-2014 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 "hb.h"
#include <regex.h>
/* NL-means presets and tunes
*
* Presets adjust strength:
* ultralight - visually transparent
* light
* medium
* strong
*
* Tunes adjust settings to the specified content type:
* none
* film - most content, live action
* grain - like film but preserves luma grain
* highmotion - like film but avoids color smearing with stronger settings
* animation - cel animation such as cartoons, anime
*/
static char * generate_nlmeans_settings(const char *preset, const char *tune)
{
char *opt = NULL;
if (preset == NULL)
return NULL;
if (!strcasecmp(preset, "ultralight") ||
!strcasecmp(preset, "light") ||
!strcasecmp(preset, "medium") ||
!strcasecmp(preset, "strong"))
{
double strength[2],
origin_tune[2];
int patch_size[2],
range[2],
frames[2],
prefilter[2];
if (tune == NULL || !strcasecmp(tune, "none"))
{
strength[0] = strength[1] = 6;
origin_tune[0] = origin_tune[1] = 1;
patch_size[0] = patch_size[1] = 7;
range[0] = range[1] = 3;
frames[0] = frames[1] = 2;
prefilter[0] = prefilter[1] = 0;
if (!strcasecmp(preset, "ultralight"))
{
strength[0] = strength[1] = 1.5;
}
else if (!strcasecmp(preset, "light"))
{
strength[0] = strength[1] = 3;
}
else if (!strcasecmp(preset, "strong"))
{
strength[0] = strength[1] = 10;
}
}
else if (!strcasecmp(tune, "film"))
{
strength[0] = 6; strength[1] = 8;
origin_tune[0] = origin_tune[1] = 0.8;
patch_size[0] = patch_size[1] = 7;
range[0] = range[1] = 3;
frames[0] = frames[1] = 2;
prefilter[0] = prefilter[1] = 0;
if (!strcasecmp(preset, "ultralight"))
{
strength[0] = 1.5; strength[1] = 2.4;
origin_tune[0] = 0.9; origin_tune[1] = 0.9;
}
else if (!strcasecmp(preset, "light"))
{
strength[0] = 3; strength[1] = 4;
origin_tune[0] = 0.9; origin_tune[1] = 0.9;
}
else if (!strcasecmp(preset, "strong"))
{
strength[0] = 8; strength[1] = 10;
origin_tune[0] = 0.6; origin_tune[1] = 0.6;
}
}
else if (!strcasecmp(tune, "grain"))
{
strength[0] = 0; strength[1] = 6;
origin_tune[0] = origin_tune[1] = 0.8;
patch_size[0] = patch_size[1] = 7;
range[0] = range[1] = 3;
frames[0] = frames[1] = 2;
prefilter[0] = prefilter[1] = 0;
if (!strcasecmp(preset, "ultralight"))
{
strength[0] = 0; strength[1] = 2.4;
origin_tune[0] = 0.9; origin_tune[1] = 0.9;
}
else if (!strcasecmp(preset, "light"))
{
strength[0] = 0; strength[1] = 3.5;
origin_tune[0] = 0.9; origin_tune[1] = 0.9;
}
else if (!strcasecmp(preset, "strong"))
{
strength[0] = 0; strength[1] = 8;
origin_tune[0] = 0.6; origin_tune[1] = 0.6;
}
}
else if (!strcasecmp(tune, "highmotion"))
{
strength[0] = 6; strength[1] = 6;
origin_tune[0] = 0.8; origin_tune[1] = 0.7;
patch_size[0] = 7; patch_size[1] = 7;
range[0] = 3; range[1] = 5;
frames[0] = 2; frames[1] = 1;
prefilter[0] = 0; prefilter[1] = 0;
if (!strcasecmp(preset, "ultralight"))
{
strength[0] = 1.5; strength[1] = 2.4;
origin_tune[0] = 0.9; origin_tune[1] = 0.9;
}
else if (!strcasecmp(preset, "light"))
{
strength[0] = 3; strength[1] = 3.25;
origin_tune[0] = 0.9; origin_tune[1] = 0.8;
}
else if (!strcasecmp(preset, "strong"))
{
strength[0] = 8; strength[1] = 6.75;
origin_tune[0] = 0.6; origin_tune[1] = 0.5;
}
}
else if (!strcasecmp(tune, "animation"))
{
strength[0] = 5; strength[1] = 4;
origin_tune[0] = origin_tune[1] = 0.15;
patch_size[0] = patch_size[1] = 5;
range[0] = range[1] = 7;
frames[0] = frames[1] = 4;
prefilter[0] = prefilter[1] = 0;
if (!strcasecmp(preset, "ultralight"))
{
strength[0] = 2.5; strength[1] = 2;
frames[0] = 2; frames[1] = 2;
}
else if (!strcasecmp(preset, "light"))
{
strength[0] = 3; strength[1] = 2.25;
frames[0] = 3; frames[1] = 3;
}
else if (!strcasecmp(preset, "strong"))
{
strength[0] = 10; strength[1] = 8;
}
}
else
{
fprintf(stderr, "Unrecognized nlmeans tune (%s).\n", tune);
return NULL;
}
opt = hb_strdup_printf("%lf:%lf:%d:%d:%d:%d:%lf:%lf:%d:%d:%d:%d",
strength[0], origin_tune[0], patch_size[0],
range[0], frames[0], prefilter[0],
strength[1], origin_tune[1], patch_size[1],
range[1], frames[1], prefilter[1]);
}
else
{
opt = strdup(preset);
if (tune != NULL)
{
fprintf(stderr, "Custom nlmeans parameters specified; ignoring nlmeans tune (%s).\n", tune);
}
}
return opt;
}
/* HQDN3D presets
*
* Presets adjust strength:
* ultralight - visually transparent
* light
* medium
* strong
*/
static char * generate_hqdn3d_settings(const char *preset, const char *tune)
{
if (preset == NULL)
return NULL;
if (!strcasecmp(preset, "strong"))
return strdup("7:7:7:5:5:5");
else if (!strcasecmp(preset, "medium"))
return strdup("3:2:2:2:3:3");
else if (!strcasecmp(preset, "light") || !strcasecmp(preset, "weak"))
return strdup("2:1:1:2:3:3");
else if (!strcasecmp(preset, "ultralight"))
return strdup("1:0.7:0.7:1:2:2");
else
return strdup(preset);
}
int hb_validate_param_string(const char *regex_pattern, const char *param_string)
{
regex_t regex_temp;
if (regcomp(®ex_temp, regex_pattern, REG_EXTENDED) == 0)
{
if (regexec(®ex_temp, param_string, 0, NULL, 0) == 0)
{
regfree(®ex_temp);
return 0;
}
}
else
{
fprintf(stderr, "hb_validate_param_string: Error compiling regex for pattern (%s).\n", param_string);
}
regfree(®ex_temp);
return 1;
}
int hb_validate_filter_settings(int filter_id, const char *filter_param)
{
// Regex matches "number" followed by one or more ":number", where number is uint or ufloat
const char *hb_colon_separated_params_regex = "^((([0-9]+([.][0-9]+)?)|([.][0-9]+))((:(([0-9]+([.][0-9]+)?)|([.][0-9]+)))+)?)$";
char *regex_pattern = NULL;
switch (filter_id)
{
case HB_FILTER_NLMEANS:
case HB_FILTER_HQDN3D:
if (filter_param == NULL)
{
return 0;
}
regex_pattern = hb_colon_separated_params_regex;
break;
default:
fprintf(stderr, "hb_validate_filter_settings: Unrecognized filter (%d).\n",
filter_id);
return 1;
break;
}
if (hb_validate_param_string(regex_pattern, filter_param) == 0)
{
return 0;
}
return 1;
}
char * hb_generate_filter_settings(int filter_id, const char *preset, const char *tune)
{
char *filter_param = NULL;
switch (filter_id)
{
case HB_FILTER_NLMEANS:
filter_param = generate_nlmeans_settings(preset, tune);
break;
case HB_FILTER_HQDN3D:
filter_param = generate_hqdn3d_settings(preset, tune);
break;
default:
fprintf(stderr, "hb_generate_filter_settings: Unrecognized filter (%d).\n",
filter_id);
break;
}
if (hb_validate_filter_settings(filter_id, filter_param) == 0)
{
return filter_param;
}
return NULL;
}
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