291 lines
10 KiB
C
291 lines
10 KiB
C
#include <obs-module.h>
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#include <graphics/matrix4.h>
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#include <graphics/vec2.h>
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#include <graphics/vec4.h>
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#define SETTING_OPACITY "opacity"
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#define SETTING_CONTRAST "contrast"
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#define SETTING_BRIGHTNESS "brightness"
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#define SETTING_GAMMA "gamma"
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#define SETTING_COLOR_TYPE "key_color_type"
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#define SETTING_KEY_COLOR "key_color"
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#define SETTING_SIMILARITY "similarity"
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#define SETTING_SMOOTHNESS "smoothness"
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#define SETTING_SPILL "spill"
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#define TEXT_OPACITY obs_module_text("Opacity")
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#define TEXT_CONTRAST obs_module_text("Contrast")
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#define TEXT_BRIGHTNESS obs_module_text("Brightness")
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#define TEXT_GAMMA obs_module_text("Gamma")
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#define TEXT_COLOR_TYPE obs_module_text("KeyColorType")
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#define TEXT_KEY_COLOR obs_module_text("KeyColor")
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#define TEXT_SIMILARITY obs_module_text("Similarity")
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#define TEXT_SMOOTHNESS obs_module_text("Smoothness")
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#define TEXT_SPILL obs_module_text("ColorSpillReduction")
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struct chroma_key_filter_data {
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obs_source_t *context;
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gs_effect_t *effect;
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gs_eparam_t *color_param;
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gs_eparam_t *contrast_param;
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gs_eparam_t *brightness_param;
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gs_eparam_t *gamma_param;
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gs_eparam_t *pixel_size_param;
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gs_eparam_t *chroma_param;
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gs_eparam_t *key_rgb_param;
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gs_eparam_t *similarity_param;
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gs_eparam_t *smoothness_param;
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gs_eparam_t *spill_param;
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struct vec4 color;
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float contrast;
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float brightness;
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float gamma;
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struct vec4 key_rgb;
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struct vec2 chroma;
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float similarity;
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float smoothness;
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float spill;
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};
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static const char *chroma_key_name(void *unused)
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{
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UNUSED_PARAMETER(unused);
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return obs_module_text("ChromaKeyFilter");
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}
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static const float yuv_mat[16] = {0.182586f, -0.100644f, 0.439216f, 0.0f,
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0.614231f, -0.338572f, -0.398942f, 0.0f,
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0.062007f, 0.439216f, -0.040274f, 0.0f,
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0.062745f, 0.501961f, 0.501961f, 1.0f};
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static inline void color_settings_update(
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struct chroma_key_filter_data *filter, obs_data_t *settings)
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{
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uint32_t opacity = (uint32_t)obs_data_get_int(settings,
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SETTING_OPACITY);
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uint32_t color = 0xFFFFFF | (((opacity * 255) / 100) << 24);
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double contrast = obs_data_get_double(settings, SETTING_CONTRAST);
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double brightness = obs_data_get_double(settings, SETTING_BRIGHTNESS);
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double gamma = obs_data_get_double(settings, SETTING_GAMMA);
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contrast = (contrast < 0.0) ?
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(1.0 / (-contrast + 1.0)) : (contrast + 1.0);
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brightness *= 0.5;
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gamma = (gamma < 0.0) ? (-gamma + 1.0) : (1.0 / (gamma + 1.0));
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filter->contrast = (float)contrast;
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filter->brightness = (float)brightness;
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filter->gamma = (float)gamma;
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vec4_from_rgba(&filter->color, color);
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}
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static inline void chroma_settings_update(
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struct chroma_key_filter_data *filter, obs_data_t *settings)
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{
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int64_t similarity = obs_data_get_int(settings, SETTING_SIMILARITY);
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int64_t smoothness = obs_data_get_int(settings, SETTING_SMOOTHNESS);
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int64_t spill = obs_data_get_int(settings, SETTING_SPILL);
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uint32_t key_color = (uint32_t)obs_data_get_int(settings,
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SETTING_KEY_COLOR);
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const char *key_type = obs_data_get_string(settings,
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SETTING_COLOR_TYPE);
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struct vec4 key_color_v4;
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struct matrix4 yuv_mat_m4;
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if (strcmp(key_type, "green") == 0)
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key_color = 0x00FF00;
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else if (strcmp(key_type, "blue") == 0)
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key_color = 0xFF9900;
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else if (strcmp(key_type, "magenta") == 0)
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key_color = 0xFF00FF;
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vec4_from_rgba(&filter->key_rgb, key_color | 0xFF000000);
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memcpy(&yuv_mat_m4, yuv_mat, sizeof(yuv_mat));
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vec4_transform(&key_color_v4, &filter->key_rgb, &yuv_mat_m4);
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vec2_set(&filter->chroma, key_color_v4.y, key_color_v4.z);
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filter->similarity = (float)similarity / 1000.0f;
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filter->smoothness = (float)smoothness / 1000.0f;
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filter->spill = (float)spill / 1000.0f;
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}
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static void chroma_key_update(void *data, obs_data_t *settings)
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{
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struct chroma_key_filter_data *filter = data;
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color_settings_update(filter, settings);
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chroma_settings_update(filter, settings);
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}
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static void chroma_key_destroy(void *data)
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{
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struct chroma_key_filter_data *filter = data;
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if (filter->effect) {
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obs_enter_graphics();
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gs_effect_destroy(filter->effect);
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obs_leave_graphics();
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}
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bfree(data);
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}
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static void *chroma_key_create(obs_data_t *settings, obs_source_t *context)
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{
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struct chroma_key_filter_data *filter =
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bzalloc(sizeof(struct chroma_key_filter_data));
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char *effect_path = obs_module_file("chroma_key_filter.effect");
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filter->context = context;
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obs_enter_graphics();
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filter->effect = gs_effect_create_from_file(effect_path, NULL);
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if (filter->effect) {
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filter->color_param = gs_effect_get_param_by_name(
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filter->effect, "color");
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filter->contrast_param = gs_effect_get_param_by_name(
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filter->effect, "contrast");
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filter->brightness_param = gs_effect_get_param_by_name(
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filter->effect, "brightness");
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filter->gamma_param = gs_effect_get_param_by_name(
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filter->effect, "gamma");
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filter->chroma_param = gs_effect_get_param_by_name(
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filter->effect, "chroma_key");
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filter->key_rgb_param = gs_effect_get_param_by_name(
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filter->effect, "key_rgb");
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filter->pixel_size_param = gs_effect_get_param_by_name(
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filter->effect, "pixel_size");
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filter->similarity_param = gs_effect_get_param_by_name(
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filter->effect, "similarity");
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filter->smoothness_param = gs_effect_get_param_by_name(
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filter->effect, "smoothness");
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filter->spill_param = gs_effect_get_param_by_name(
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filter->effect, "spill");
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}
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obs_leave_graphics();
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bfree(effect_path);
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if (!filter->effect) {
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chroma_key_destroy(filter);
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return NULL;
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}
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chroma_key_update(filter, settings);
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return filter;
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}
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static void chroma_key_render(void *data, gs_effect_t *effect)
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{
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struct chroma_key_filter_data *filter = data;
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obs_source_t *target = obs_filter_get_target(filter->context);
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uint32_t width = obs_source_get_base_width(target);
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uint32_t height = obs_source_get_base_height(target);
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struct vec2 pixel_size;
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if (!obs_source_process_filter_begin(filter->context, GS_RGBA,
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OBS_ALLOW_DIRECT_RENDERING))
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return;
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vec2_set(&pixel_size, 1.0f / (float)width, 1.0f / (float)height);
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gs_effect_set_vec4(filter->color_param, &filter->color);
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gs_effect_set_float(filter->contrast_param, filter->contrast);
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gs_effect_set_float(filter->brightness_param, filter->brightness);
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gs_effect_set_float(filter->gamma_param, filter->gamma);
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gs_effect_set_vec2(filter->chroma_param, &filter->chroma);
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gs_effect_set_vec4(filter->key_rgb_param, &filter->key_rgb);
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gs_effect_set_vec2(filter->pixel_size_param, &pixel_size);
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gs_effect_set_float(filter->similarity_param, filter->similarity);
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gs_effect_set_float(filter->smoothness_param, filter->smoothness);
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gs_effect_set_float(filter->spill_param, filter->spill);
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obs_source_process_filter_end(filter->context, filter->effect, 0, 0);
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UNUSED_PARAMETER(effect);
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}
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static bool key_type_changed(obs_properties_t *props, obs_property_t *p,
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obs_data_t *settings)
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{
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const char *type = obs_data_get_string(settings, SETTING_COLOR_TYPE);
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bool custom = strcmp(type, "custom") == 0;
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obs_property_set_visible(obs_properties_get(props, SETTING_KEY_COLOR),
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custom);
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UNUSED_PARAMETER(p);
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return true;
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}
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static obs_properties_t *chroma_key_properties(void *data)
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{
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obs_properties_t *props = obs_properties_create();
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obs_property_t *p = obs_properties_add_list(props,
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SETTING_COLOR_TYPE, TEXT_COLOR_TYPE,
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OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_STRING);
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obs_property_list_add_string(p, obs_module_text("Green"), "green");
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obs_property_list_add_string(p, obs_module_text("Blue"), "blue");
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obs_property_list_add_string(p, obs_module_text("Magenta"), "magenta");
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obs_property_list_add_string(p, obs_module_text("Custom"), "custom");
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obs_property_set_modified_callback(p, key_type_changed);
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obs_properties_add_color(props, SETTING_KEY_COLOR, TEXT_KEY_COLOR);
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obs_properties_add_int_slider(props, SETTING_SIMILARITY,
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TEXT_SIMILARITY, 1, 1000, 1);
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obs_properties_add_int_slider(props, SETTING_SMOOTHNESS,
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TEXT_SMOOTHNESS, 1, 1000, 1);
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obs_properties_add_int_slider(props, SETTING_SPILL,
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TEXT_SPILL, 1, 1000, 1);
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obs_properties_add_int(props, SETTING_OPACITY, TEXT_OPACITY, 0, 100, 1);
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obs_properties_add_float_slider(props, SETTING_CONTRAST,
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TEXT_CONTRAST, -1.0, 1.0, 0.01);
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obs_properties_add_float_slider(props, SETTING_BRIGHTNESS,
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TEXT_BRIGHTNESS, -1.0, 1.0, 0.01);
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obs_properties_add_float_slider(props, SETTING_GAMMA,
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TEXT_GAMMA, -1.0, 1.0, 0.01);
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UNUSED_PARAMETER(data);
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return props;
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}
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static void chroma_key_defaults(obs_data_t *settings)
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{
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obs_data_set_default_int(settings, SETTING_OPACITY, 100);
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obs_data_set_default_double(settings, SETTING_CONTRAST, 0.0);
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obs_data_set_default_double(settings, SETTING_BRIGHTNESS, 0.0);
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obs_data_set_default_double(settings, SETTING_GAMMA, 0.0);
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obs_data_set_default_int(settings, SETTING_KEY_COLOR, 0x00FF00);
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obs_data_set_default_string(settings, SETTING_COLOR_TYPE, "green");
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obs_data_set_default_int(settings, SETTING_SIMILARITY, 400);
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obs_data_set_default_int(settings, SETTING_SMOOTHNESS, 80);
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obs_data_set_default_int(settings, SETTING_SPILL, 100);
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}
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struct obs_source_info chroma_key_filter = {
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.id = "chroma_key_filter",
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.type = OBS_SOURCE_TYPE_FILTER,
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.output_flags = OBS_SOURCE_VIDEO,
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.get_name = chroma_key_name,
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.create = chroma_key_create,
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.destroy = chroma_key_destroy,
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.video_render = chroma_key_render,
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.update = chroma_key_update,
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.get_properties = chroma_key_properties,
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.get_defaults = chroma_key_defaults
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};
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