obs-studio/plugins/obs-filters/sharpness-filter.c
jp9000 ff99ba7818 libobs: Allow filter processing function to return false
(Note: this commit also modifies the obs-filters and test-input modules)

Changes the obs_source_process_filter_begin return type so that it
returns true/false to indicate that filter processing should or should
not continue (for example if the filter is bypassed or if there's some
other sort of issue that causes the filtering to fail)
2016-04-22 10:18:12 -07:00

127 lines
3.1 KiB
C

#include <obs-module.h>
#include <obs-source.h>
#include <obs.h>
#include <util/platform.h>
struct sharpness_data {
obs_source_t *context;
gs_effect_t *effect;
gs_eparam_t *sharpness_param;
gs_eparam_t *texture_width, *texture_height;
float sharpness;
float texwidth, texheight;
};
static const char *sharpness_getname(void *unused)
{
UNUSED_PARAMETER(unused);
return obs_module_text("SharpnessFilter");
}
static void sharpness_update(void *data, obs_data_t *settings)
{
struct sharpness_data *filter = data;
double sharpness = obs_data_get_double(settings, "sharpness");
filter->sharpness = (float)sharpness;
}
static void sharpness_destroy(void *data)
{
struct sharpness_data *filter = data;
if (filter->effect) {
obs_enter_graphics();
gs_effect_destroy(filter->effect);
obs_leave_graphics();
}
bfree(data);
}
static void *sharpness_create(obs_data_t *settings, obs_source_t *context)
{
struct sharpness_data *filter =
bzalloc(sizeof(struct sharpness_data));
char *effect_path = obs_module_file("sharpness.effect");
filter->context = context;
obs_enter_graphics();
filter->effect = gs_effect_create_from_file(effect_path, NULL);
if (filter->effect) {
filter->sharpness_param = gs_effect_get_param_by_name(
filter->effect, "sharpness");
filter->texture_width = gs_effect_get_param_by_name(
filter->effect, "texture_width");
filter->texture_height = gs_effect_get_param_by_name(
filter->effect, "texture_height");
}
obs_leave_graphics();
bfree(effect_path);
if (!filter->effect) {
sharpness_destroy(filter);
return NULL;
}
sharpness_update(filter, settings);
return filter;
}
static void sharpness_render(void *data, gs_effect_t *effect)
{
struct sharpness_data *filter = data;
if (!obs_source_process_filter_begin(filter->context, GS_RGBA,
OBS_ALLOW_DIRECT_RENDERING))
return;
filter->texwidth =(float)obs_source_get_width(
obs_filter_get_target(filter->context));
filter->texheight = (float)obs_source_get_height(
obs_filter_get_target(filter->context));
gs_effect_set_float(filter->sharpness_param, filter->sharpness);
gs_effect_set_float(filter->texture_width, filter->texwidth);
gs_effect_set_float(filter->texture_height, filter->texheight);
obs_source_process_filter_end(filter->context, filter->effect, 0, 0);
UNUSED_PARAMETER(effect);
}
static obs_properties_t *sharpness_properties(void *data)
{
obs_properties_t *props = obs_properties_create();
obs_properties_add_float_slider(props, "sharpness",
"Sharpness", 0.0f, 1.0f, 0.01f);
UNUSED_PARAMETER(data);
return props;
}
static void sharpness_defaults(obs_data_t *settings)
{
obs_data_set_default_double(settings, "sharpness", 0.08);
}
struct obs_source_info sharpness_filter = {
.id = "sharpness_filter",
.type = OBS_SOURCE_TYPE_FILTER,
.output_flags = OBS_SOURCE_VIDEO,
.get_name = sharpness_getname,
.create = sharpness_create,
.destroy = sharpness_destroy,
.update = sharpness_update,
.video_render = sharpness_render,
.get_properties = sharpness_properties,
.get_defaults = sharpness_defaults
};