New upstream version 21.0.2+dfsg1

test/test-input/sync-pair-aud.c

@@ -0,0 +1,137 @@
+#include <math.h>
+#include <util/bmem.h>
+#include <util/threading.h>
+#include <util/platform.h>
+#include <obs.h>
+
+struct sync_pair_aud {
+	bool         initialized_thread;
+	pthread_t    thread;
+	os_event_t   *event;
+	obs_source_t *source;
+};
+
+/* middle C */
+static const double rate = 261.63/48000.0;
+
+#ifndef M_PI
+#define M_PI 3.1415926535897932384626433832795
+#endif
+
+#define M_PI_X2 M_PI*2
+
+extern uint64_t starting_time;
+
+static inline bool whitelist_time(uint64_t ts, uint64_t interval,
+		uint64_t fps_num, uint64_t fps_den)
+{
+	if (!starting_time)
+		return false;
+
+	uint64_t count = (ts - starting_time) / interval;
+	uint64_t sec = count * fps_den / fps_num;
+	return sec % 2 == 1;
+}
+
+static void *sync_pair_aud_thread(void *pdata)
+{
+	struct sync_pair_aud *spa = pdata;
+	uint32_t sample_rate = audio_output_get_sample_rate(obs_get_audio());
+	uint32_t frames = sample_rate / 100;
+	uint64_t last_time = obs_get_video_frame_time();
+	double cos_val = 0.0;
+	float *samples = malloc(frames * sizeof(float));
+
+	uint64_t interval = video_output_get_frame_time(obs_get_video());
+	const struct video_output_info *voi =
+		video_output_get_info(obs_get_video());
+	uint64_t fps_num = voi->fps_num;
+	uint64_t fps_den = voi->fps_den;
+
+	while (os_event_try(spa->event) == EAGAIN) {
+		if (!os_sleepto_ns(last_time += 10000000))
+			last_time = obs_get_video_frame_time();
+
+		for (uint64_t i = 0; i < frames; i++) {
+			uint64_t ts = last_time +
+				i * 1000000000ULL / sample_rate;
+
+			if (whitelist_time(ts, interval, fps_num, fps_den)) {
+				cos_val += rate * M_PI_X2;
+				if (cos_val > M_PI_X2)
+					cos_val -= M_PI_X2;
+
+				samples[i] = (float)(cos(cos_val) * 0.5);
+			} else {
+				samples[i] = 0.0f;
+			}
+		}
+
+		struct obs_source_audio data;
+		data.data[0] = (uint8_t*)samples;
+		data.frames = frames;
+		data.speakers = SPEAKERS_MONO;
+		data.samples_per_sec = sample_rate;
+		data.timestamp = last_time;
+		data.format = AUDIO_FORMAT_FLOAT;
+		obs_source_output_audio(spa->source, &data);
+	}
+
+	free(samples);
+
+	return NULL;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static const char *sync_pair_aud_getname(void *unused)
+{
+	UNUSED_PARAMETER(unused);
+	return "Sync Test Pair (Audio)";
+}
+
+static void sync_pair_aud_destroy(void *data)
+{
+	struct sync_pair_aud *spa = data;
+
+	if (spa) {
+		if (spa->initialized_thread) {
+			void *ret;
+			os_event_signal(spa->event);
+			pthread_join(spa->thread, &ret);
+		}
+
+		os_event_destroy(spa->event);
+		bfree(spa);
+	}
+}
+
+static void *sync_pair_aud_create(obs_data_t *settings,
+		obs_source_t *source)
+{
+	struct sync_pair_aud *spa = bzalloc(sizeof(struct sync_pair_aud));
+	spa->source = source;
+
+	if (os_event_init(&spa->event, OS_EVENT_TYPE_MANUAL) != 0)
+		goto fail;
+	if (pthread_create(&spa->thread, NULL, sync_pair_aud_thread, spa) != 0)
+		goto fail;
+
+	spa->initialized_thread = true;
+
+	UNUSED_PARAMETER(settings);
+	return spa;
+
+fail:
+	sync_pair_aud_destroy(spa);
+	return NULL;
+}
+
+struct obs_source_info sync_audio = {
+	.id           = "sync_audio",
+	.type         = OBS_SOURCE_TYPE_INPUT,
+	.output_flags = OBS_SOURCE_AUDIO,
+	.get_name     = sync_pair_aud_getname,
+	.create       = sync_pair_aud_create,
+	.destroy      = sync_pair_aud_destroy,
+};