102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
#include <obs-module.h>
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struct fade_info {
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obs_source_t *source;
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gs_effect_t *effect;
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gs_eparam_t *a_param;
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gs_eparam_t *b_param;
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gs_eparam_t *fade_param;
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};
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static const char *fade_get_name(void *type_data)
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{
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UNUSED_PARAMETER(type_data);
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return obs_module_text("FadeTransition");
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}
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static void *fade_create(obs_data_t *settings, obs_source_t *source)
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{
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struct fade_info *fade;
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char *file = obs_module_file("fade_transition.effect");
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gs_effect_t *effect;
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obs_enter_graphics();
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effect = gs_effect_create_from_file(file, NULL);
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obs_leave_graphics();
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bfree(file);
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if (!effect) {
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blog(LOG_ERROR, "Could not find fade_transition.effect");
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return NULL;
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}
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fade = bmalloc(sizeof(*fade));
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fade->source = source;
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fade->effect = effect;
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fade->a_param = gs_effect_get_param_by_name(effect, "tex_a");
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fade->b_param = gs_effect_get_param_by_name(effect, "tex_b");
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fade->fade_param = gs_effect_get_param_by_name(effect, "fade_val");
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UNUSED_PARAMETER(settings);
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return fade;
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}
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static void fade_destroy(void *data)
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{
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struct fade_info *fade = data;
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bfree(fade);
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}
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static void fade_callback(void *data, gs_texture_t *a, gs_texture_t *b, float t,
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uint32_t cx, uint32_t cy)
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{
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struct fade_info *fade = data;
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gs_effect_set_texture(fade->a_param, a);
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gs_effect_set_texture(fade->b_param, b);
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gs_effect_set_float(fade->fade_param, t);
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while (gs_effect_loop(fade->effect, "Fade"))
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gs_draw_sprite(NULL, 0, cx, cy);
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}
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static void fade_video_render(void *data, gs_effect_t *effect)
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{
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struct fade_info *fade = data;
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obs_transition_video_render(fade->source, fade_callback);
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UNUSED_PARAMETER(effect);
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}
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static float mix_a(void *data, float t)
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{
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UNUSED_PARAMETER(data);
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return 1.0f - t;
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}
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static float mix_b(void *data, float t)
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{
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UNUSED_PARAMETER(data);
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return t;
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}
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static bool fade_audio_render(void *data, uint64_t *ts_out,
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struct obs_source_audio_mix *audio,
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uint32_t mixers, size_t channels,
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size_t sample_rate)
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{
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struct fade_info *fade = data;
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return obs_transition_audio_render(fade->source, ts_out, audio, mixers,
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channels, sample_rate, mix_a, mix_b);
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}
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struct obs_source_info fade_transition = {
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.id = "fade_transition",
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.type = OBS_SOURCE_TYPE_TRANSITION,
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.get_name = fade_get_name,
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.create = fade_create,
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.destroy = fade_destroy,
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.video_render = fade_video_render,
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.audio_render = fade_audio_render,
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};
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