UI: Add eRTMP Multitrack Video Output

UI/goliveapi-postdata.cpp

@@ -0,0 +1,47 @@
+#include "goliveapi-postdata.hpp"
+
+#include <nlohmann/json.hpp>
+
+#include "system-info.hpp"
+
+#include "models/multitrack-video.hpp"
+
+GoLiveApi::PostData
+constructGoLivePost(QString streamKey,
+		    const std::optional<uint64_t> &maximum_aggregate_bitrate,
+		    const std::optional<uint32_t> &maximum_video_tracks,
+		    bool vod_track_enabled)
+{
+	GoLiveApi::PostData post_data{};
+	post_data.service = "IVS";
+	post_data.schema_version = "2023-05-10";
+	post_data.authentication = streamKey.toStdString();
+
+	system_info(post_data.capabilities);
+
+	auto &client = post_data.capabilities.client;
+
+	client.name = "obs-studio";
+	client.version = obs_get_version_string();
+	client.vod_track_audio = vod_track_enabled;
+
+	obs_video_info ovi;
+	if (obs_get_video_info(&ovi)) {
+		client.width = ovi.output_width;
+		client.height = ovi.output_height;
+		client.fps_numerator = ovi.fps_num;
+		client.fps_denominator = ovi.fps_den;
+
+		client.canvas_width = ovi.base_width;
+		client.canvas_height = ovi.base_height;
+	}
+
+	auto &preferences = post_data.preferences;
+	if (maximum_aggregate_bitrate.has_value())
+		preferences.maximum_aggregate_bitrate =
+			maximum_aggregate_bitrate.value();
+	if (maximum_video_tracks.has_value())
+		preferences.maximum_video_tracks = maximum_video_tracks.value();
+
+	return post_data;
+}