yolobs-studio/plugins/obs-filters/luma-key-filter.c
2019-09-22 23:19:10 +02:00

160 lines
4.4 KiB
C

#include <obs-module.h>
/* clang-format off */
#define SETTING_LUMA_MAX "luma_max"
#define SETTING_LUMA_MIN "luma_min"
#define SETTING_LUMA_MAX_SMOOTH "luma_max_smooth"
#define SETTING_LUMA_MIN_SMOOTH "luma_min_smooth"
#define TEXT_LUMA_MAX obs_module_text("Luma.LumaMax")
#define TEXT_LUMA_MIN obs_module_text("Luma.LumaMin")
#define TEXT_LUMA_MAX_SMOOTH obs_module_text("Luma.LumaMaxSmooth")
#define TEXT_LUMA_MIN_SMOOTH obs_module_text("Luma.LumaMinSmooth")
/* clang-format on */
struct luma_key_filter_data {
obs_source_t *context;
gs_effect_t *effect;
gs_eparam_t *luma_max_param;
gs_eparam_t *luma_min_param;
gs_eparam_t *luma_max_smooth_param;
gs_eparam_t *luma_min_smooth_param;
float luma_max;
float luma_min;
float luma_max_smooth;
float luma_min_smooth;
};
static const char *luma_key_name(void *unused)
{
UNUSED_PARAMETER(unused);
return obs_module_text("LumaKeyFilter");
}
static void luma_key_update(void *data, obs_data_t *settings)
{
struct luma_key_filter_data *filter = data;
double lumaMax = obs_data_get_double(settings, SETTING_LUMA_MAX);
double lumaMin = obs_data_get_double(settings, SETTING_LUMA_MIN);
double lumaMaxSmooth =
obs_data_get_double(settings, SETTING_LUMA_MAX_SMOOTH);
double lumaMinSmooth =
obs_data_get_double(settings, SETTING_LUMA_MIN_SMOOTH);
filter->luma_max = (float)lumaMax;
filter->luma_min = (float)lumaMin;
filter->luma_max_smooth = (float)lumaMaxSmooth;
filter->luma_min_smooth = (float)lumaMinSmooth;
}
static void luma_key_destroy(void *data)
{
struct luma_key_filter_data *filter = data;
if (filter->effect) {
obs_enter_graphics();
gs_effect_destroy(filter->effect);
obs_leave_graphics();
}
bfree(data);
}
static void *luma_key_create(obs_data_t *settings, obs_source_t *context)
{
struct luma_key_filter_data *filter =
bzalloc(sizeof(struct luma_key_filter_data));
char *effect_path = obs_module_file("luma_key_filter.effect");
filter->context = context;
obs_enter_graphics();
filter->effect = gs_effect_create_from_file(effect_path, NULL);
if (filter->effect) {
filter->luma_max_param =
gs_effect_get_param_by_name(filter->effect, "lumaMax");
filter->luma_min_param =
gs_effect_get_param_by_name(filter->effect, "lumaMin");
filter->luma_max_smooth_param = gs_effect_get_param_by_name(
filter->effect, "lumaMaxSmooth");
filter->luma_min_smooth_param = gs_effect_get_param_by_name(
filter->effect, "lumaMinSmooth");
}
obs_leave_graphics();
bfree(effect_path);
if (!filter->effect) {
luma_key_destroy(filter);
return NULL;
}
luma_key_update(filter, settings);
return filter;
}
static void luma_key_render(void *data, gs_effect_t *effect)
{
struct luma_key_filter_data *filter = data;
if (!obs_source_process_filter_begin(filter->context, GS_RGBA,
OBS_ALLOW_DIRECT_RENDERING))
return;
gs_effect_set_float(filter->luma_max_param, filter->luma_max);
gs_effect_set_float(filter->luma_min_param, filter->luma_min);
gs_effect_set_float(filter->luma_max_smooth_param,
filter->luma_max_smooth);
gs_effect_set_float(filter->luma_min_smooth_param,
filter->luma_min_smooth);
obs_source_process_filter_end(filter->context, filter->effect, 0, 0);
UNUSED_PARAMETER(effect);
}
static obs_properties_t *luma_key_properties(void *data)
{
obs_properties_t *props = obs_properties_create();
obs_properties_add_float_slider(props, SETTING_LUMA_MAX, TEXT_LUMA_MAX,
0, 1, 0.01);
obs_properties_add_float_slider(props, SETTING_LUMA_MAX_SMOOTH,
TEXT_LUMA_MAX_SMOOTH, 0, 1, 0.01);
obs_properties_add_float_slider(props, SETTING_LUMA_MIN, TEXT_LUMA_MIN,
0, 1, 0.01);
obs_properties_add_float_slider(props, SETTING_LUMA_MIN_SMOOTH,
TEXT_LUMA_MIN_SMOOTH, 0, 1, 0.01);
UNUSED_PARAMETER(data);
return props;
}
static void luma_key_defaults(obs_data_t *settings)
{
obs_data_set_default_double(settings, SETTING_LUMA_MAX, 1.0);
obs_data_set_default_double(settings, SETTING_LUMA_MIN, 0.0);
obs_data_set_default_double(settings, SETTING_LUMA_MAX_SMOOTH, 0.0);
obs_data_set_default_double(settings, SETTING_LUMA_MIN_SMOOTH, 0.0);
}
struct obs_source_info luma_key_filter = {
.id = "luma_key_filter",
.type = OBS_SOURCE_TYPE_FILTER,
.output_flags = OBS_SOURCE_VIDEO,
.get_name = luma_key_name,
.create = luma_key_create,
.destroy = luma_key_destroy,
.video_render = luma_key_render,
.update = luma_key_update,
.get_properties = luma_key_properties,
.get_defaults = luma_key_defaults,
};