371 lines
9.6 KiB
C
371 lines
9.6 KiB
C
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#include <obs-module.h>
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#define TIMING_TIME 0
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#define TIMING_FRAME 1
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enum fade_style {
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FADE_STYLE_FADE_OUT_FADE_IN,
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FADE_STYLE_CROSS_FADE
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};
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struct stinger_info {
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obs_source_t *source;
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obs_source_t *media_source;
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uint64_t duration_ns;
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uint64_t duration_frames;
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uint64_t transition_point_ns;
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uint64_t transition_point_frame;
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float transition_point;
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float transition_a_mul;
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float transition_b_mul;
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bool transitioning;
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bool transition_point_is_frame;
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int monitoring_type;
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enum fade_style fade_style;
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float (*mix_a)(void *data, float t);
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float (*mix_b)(void *data, float t);
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};
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static const char *stinger_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("StingerTransition");
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}
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static float mix_a_fade_in_out(void *data, float t);
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static float mix_b_fade_in_out(void *data, float t);
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static float mix_a_cross_fade(void *data, float t);
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static float mix_b_cross_fade(void *data, float t);
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static void stinger_update(void *data, obs_data_t *settings)
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{
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struct stinger_info *s = data;
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const char *path = obs_data_get_string(settings, "path");
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obs_data_t *media_settings = obs_data_create();
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obs_data_set_string(media_settings, "local_file", path);
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obs_source_release(s->media_source);
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s->media_source = obs_source_create_private("ffmpeg_source", NULL,
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media_settings);
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obs_data_release(media_settings);
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int64_t point = obs_data_get_int(settings, "transition_point");
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s->transition_point_is_frame =
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obs_data_get_int(settings, "tp_type") == TIMING_FRAME;
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if (s->transition_point_is_frame)
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s->transition_point_frame = (uint64_t)point;
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else
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s->transition_point_ns = (uint64_t)(point * 1000000LL);
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s->monitoring_type = (int)obs_data_get_int(settings,"audio_monitoring");
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obs_source_set_monitoring_type(s->media_source, s->monitoring_type);
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s->fade_style = (enum fade_style)obs_data_get_int(settings,
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"audio_fade_style");
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switch (s->fade_style) {
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default:
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case FADE_STYLE_FADE_OUT_FADE_IN:
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s->mix_a = mix_a_fade_in_out;
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s->mix_b = mix_b_fade_in_out;
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break;
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case FADE_STYLE_CROSS_FADE:
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s->mix_a = mix_a_cross_fade;
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s->mix_b = mix_b_cross_fade;
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break;
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}
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}
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static void *stinger_create(obs_data_t *settings, obs_source_t *source)
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{
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struct stinger_info *s = bzalloc(sizeof(*s));
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s->source = source;
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s->mix_a = mix_a_fade_in_out;
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s->mix_b = mix_b_fade_in_out;
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obs_transition_enable_fixed(s->source, true, 0);
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obs_source_update(source, settings);
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return s;
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}
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static void stinger_destroy(void *data)
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{
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struct stinger_info *s = data;
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obs_source_release(s->media_source);
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bfree(s);
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}
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static void stinger_video_render(void *data, gs_effect_t *effect)
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{
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struct stinger_info *s = data;
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float t = obs_transition_get_time(s->source);
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bool use_a = t < s->transition_point;
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enum obs_transition_target target = use_a
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? OBS_TRANSITION_SOURCE_A
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: OBS_TRANSITION_SOURCE_B;
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if (!obs_transition_video_render_direct(s->source, target))
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return;
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/* --------------------- */
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float source_cx = (float)obs_source_get_width(s->source);
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float source_cy = (float)obs_source_get_height(s->source);
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uint32_t media_cx = obs_source_get_width(s->media_source);
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uint32_t media_cy = obs_source_get_height(s->media_source);
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if (!media_cx || !media_cy)
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return;
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float scale_x = source_cx / (float)media_cx;
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float scale_y = source_cy / (float)media_cy;
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gs_matrix_push();
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gs_matrix_scale3f(scale_x, scale_y, 1.0f);
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obs_source_video_render(s->media_source);
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gs_matrix_pop();
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UNUSED_PARAMETER(effect);
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}
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static inline float calc_fade(float t, float mul)
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{
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t *= mul;
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return t > 1.0f ? 1.0f : t;
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}
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static float mix_a_fade_in_out(void *data, float t)
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{
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struct stinger_info *s = data;
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return 1.0f - calc_fade(t, s->transition_a_mul);
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}
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static float mix_b_fade_in_out(void *data, float t)
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{
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struct stinger_info *s = data;
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return 1.0f - calc_fade(1.0f - t, s->transition_b_mul);
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}
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static float mix_a_cross_fade(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_cross_fade(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 stinger_audio_render(void *data, uint64_t *ts_out,
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struct obs_source_audio_mix *audio, uint32_t mixers,
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size_t channels, size_t sample_rate)
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{
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struct stinger_info *s = data;
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uint64_t ts = 0;
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if (!obs_source_audio_pending(s->media_source)) {
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ts = obs_source_get_audio_timestamp(s->media_source);
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if (!ts)
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return false;
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}
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bool success = obs_transition_audio_render(s->source, ts_out,
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audio, mixers, channels, sample_rate, s->mix_a, s->mix_b);
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if (!ts)
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return success;
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if (!*ts_out || ts < *ts_out)
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*ts_out = ts;
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struct obs_source_audio_mix child_audio;
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obs_source_get_audio_mix(s->media_source, &child_audio);
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for (size_t mix = 0; mix < MAX_AUDIO_MIXES; mix++) {
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if ((mixers & (1 << mix)) == 0)
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continue;
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for (size_t ch = 0; ch < channels; ch++) {
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register float *out = audio->output[mix].data[ch];
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register float *in = child_audio.output[mix].data[ch];
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register float *end = in + AUDIO_OUTPUT_FRAMES;
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while (in < end)
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*(out++) += *(in++);
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}
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}
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return true;
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}
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static void stinger_transition_start(void *data)
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{
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struct stinger_info *s = data;
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if (s->media_source) {
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calldata_t cd = {0};
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proc_handler_t *ph =
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obs_source_get_proc_handler(s->media_source);
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if (s->transitioning) {
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proc_handler_call(ph, "restart", &cd);
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return;
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}
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proc_handler_call(ph, "get_duration", &cd);
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proc_handler_call(ph, "get_nb_frames", &cd);
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s->duration_ns = (uint64_t)calldata_int(&cd, "duration");
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s->duration_frames = (uint64_t)calldata_int(&cd, "num_frames");
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if (s->transition_point_is_frame)
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s->transition_point = (float)(
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(long double)s->transition_point_frame /
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(long double)s->duration_frames);
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else
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s->transition_point = (float)(
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(long double)s->transition_point_ns /
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(long double)s->duration_ns);
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if (s->transition_point > 1.0f)
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s->transition_point = 1.0f;
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else if (s->transition_point < 0.001f)
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s->transition_point = 0.001f;
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s->transition_a_mul = (1.0f / s->transition_point);
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s->transition_b_mul = (1.0f / (1.0f - s->transition_point));
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obs_transition_enable_fixed(s->source, true,
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(uint32_t)(s->duration_ns / 1000000));
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calldata_free(&cd);
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obs_source_add_active_child(s->source, s->media_source);
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}
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s->transitioning = true;
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}
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static void stinger_transition_stop(void *data)
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{
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struct stinger_info *s = data;
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if (s->media_source)
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obs_source_remove_active_child(s->source, s->media_source);
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s->transitioning = false;
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}
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static void stinger_enum_active_sources(void *data,
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obs_source_enum_proc_t enum_callback, void *param)
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{
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struct stinger_info *s = data;
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if (s->media_source && s->transitioning)
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enum_callback(s->source, s->media_source, param);
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}
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static void stinger_enum_all_sources(void *data,
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obs_source_enum_proc_t enum_callback, void *param)
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{
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struct stinger_info *s = data;
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if (s->media_source)
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enum_callback(s->source, s->media_source, param);
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}
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#define FILE_FILTER \
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"Video Files (*.mp4 *.ts *.mov *.wmv *.flv *.mkv *.avi *.gif *.webm);;"
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static bool transition_point_type_modified(obs_properties_t *ppts,
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obs_property_t *p, obs_data_t *s)
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{
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int64_t type = obs_data_get_int(s, "tp_type");
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p = obs_properties_get(ppts, "transition_point");
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if (type == TIMING_TIME)
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obs_property_set_description(p,
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obs_module_text("TransitionPoint"));
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else
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obs_property_set_description(p,
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obs_module_text("TransitionPointFrame"));
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return true;
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}
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static obs_properties_t *stinger_properties(void *data)
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{
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obs_properties_t *ppts = obs_properties_create();
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obs_properties_set_flags(ppts, OBS_PROPERTIES_DEFER_UPDATE);
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obs_properties_add_path(ppts, "path",
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obs_module_text("VideoFile"),
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OBS_PATH_FILE,
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FILE_FILTER, NULL);
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obs_property_t *list = obs_properties_add_list(ppts, "tp_type",
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obs_module_text("TransitionPointType"),
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OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_INT);
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obs_property_list_add_int(list,
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obs_module_text("TransitionPointTypeTime"),
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TIMING_TIME);
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obs_property_list_add_int(list,
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obs_module_text("TransitionPointTypeFrame"),
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TIMING_FRAME);
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obs_property_set_modified_callback(list, transition_point_type_modified);
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obs_properties_add_int(ppts, "transition_point",
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obs_module_text("TransitionPoint"),
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0, 120000, 1);
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obs_property_t *monitor_list = obs_properties_add_list(ppts,
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"audio_monitoring", obs_module_text("AudioMonitoring"),
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OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_INT);
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obs_property_list_add_int(monitor_list,
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obs_module_text("AudioMonitoring.None"),
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OBS_MONITORING_TYPE_NONE);
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obs_property_list_add_int(monitor_list,
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obs_module_text("AudioMonitoring.MonitorOnly"),
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OBS_MONITORING_TYPE_MONITOR_ONLY);
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obs_property_list_add_int(monitor_list,
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obs_module_text("AudioMonitoring.Both"),
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OBS_MONITORING_TYPE_MONITOR_AND_OUTPUT);
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obs_property_t *audio_fade_style = obs_properties_add_list(ppts,
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"audio_fade_style", obs_module_text("AudioFadeStyle"),
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OBS_COMBO_TYPE_LIST, OBS_COMBO_FORMAT_INT);
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obs_property_list_add_int(audio_fade_style,
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obs_module_text("AudioFadeStyle.FadeOutFadeIn"),
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FADE_STYLE_FADE_OUT_FADE_IN);
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obs_property_list_add_int(audio_fade_style,
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obs_module_text("AudioFadeStyle.CrossFade"),
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FADE_STYLE_CROSS_FADE);
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UNUSED_PARAMETER(data);
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return ppts;
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}
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struct obs_source_info stinger_transition = {
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.id = "obs_stinger_transition",
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.type = OBS_SOURCE_TYPE_TRANSITION,
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.get_name = stinger_get_name,
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.create = stinger_create,
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.destroy = stinger_destroy,
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.update = stinger_update,
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.video_render = stinger_video_render,
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.audio_render = stinger_audio_render,
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.get_properties = stinger_properties,
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|
.enum_active_sources = stinger_enum_active_sources,
|
||
|
|
.enum_all_sources = stinger_enum_all_sources,
|
||
|
|
.transition_start = stinger_transition_start,
|
||
|
|
.transition_stop = stinger_transition_stop
|
||
|
|
};
|