From 74da1631de120b65596a5e29ea68e0b137a0dbfc Mon Sep 17 00:00:00 2001
From: Martin Piatka <piatka@cesnet.cz>
Date: Tue, 24 Sep 2024 13:47:16 +0200
Subject: [PATCH] GUI: Display incoming video & audio formats

---
 gui/QT/ui/ultragrid_window.ui      | 58 ++++++++++++++++++++++--------
 gui/QT/window/ultragrid_window.cpp | 33 +++++++++++++++++
 gui/QT/window/ultragrid_window.hpp |  3 ++
 3 files changed, 80 insertions(+), 14 deletions(-)

diff --git a/gui/QT/ui/ultragrid_window.ui b/gui/QT/ui/ultragrid_window.ui
index 8fec2dac48..1abd64bda3 100644
--- a/gui/QT/ui/ultragrid_window.ui
+++ b/gui/QT/ui/ultragrid_window.ui
@@ -155,20 +155,50 @@
            <layout class="QHBoxLayout" name="remotePreviewBar"/>
           </item>
           <item>
-           <widget class="QLabel" name="label">
-            <property name="sizePolicy">
-             <sizepolicy hsizetype="Preferred" vsizetype="Maximum">
-              <horstretch>0</horstretch>
-              <verstretch>0</verstretch>
-             </sizepolicy>
-            </property>
-            <property name="text">
-             <string>Remote</string>
-            </property>
-            <property name="alignment">
-             <set>Qt::AlignBottom|Qt::AlignLeading|Qt::AlignLeft</set>
-            </property>
-           </widget>
+           <layout class="QHBoxLayout" name="remoteLabelFormatLayout">
+            <item>
+             <widget class="QLabel" name="label">
+              <property name="sizePolicy">
+               <sizepolicy hsizetype="Preferred" vsizetype="Maximum">
+                <horstretch>0</horstretch>
+                <verstretch>0</verstretch>
+               </sizepolicy>
+              </property>
+              <property name="text">
+               <string>Remote</string>
+              </property>
+              <property name="alignment">
+               <set>Qt::AlignBottom|Qt::AlignLeading|Qt::AlignLeft</set>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QLabel" name="recvAudioFmtLabel">
+              <property name="sizePolicy">
+               <sizepolicy hsizetype="Maximum" vsizetype="Preferred">
+                <horstretch>0</horstretch>
+                <verstretch>0</verstretch>
+               </sizepolicy>
+              </property>
+              <property name="text">
+               <string/>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QLabel" name="recvVideoFmtLabel">
+              <property name="sizePolicy">
+               <sizepolicy hsizetype="Maximum" vsizetype="Preferred">
+                <horstretch>0</horstretch>
+                <verstretch>0</verstretch>
+               </sizepolicy>
+              </property>
+              <property name="text">
+               <string/>
+              </property>
+             </widget>
+            </item>
+           </layout>
           </item>
          </layout>
         </widget>
diff --git a/gui/QT/window/ultragrid_window.cpp b/gui/QT/window/ultragrid_window.cpp
index b07b5d963c..a451592e30 100644
--- a/gui/QT/window/ultragrid_window.cpp
+++ b/gui/QT/window/ultragrid_window.cpp
@@ -17,6 +17,8 @@
 #include <CoreFoundation/CoreFoundation.h>
 #endif
 
+#include "utils/string_view_utils.hpp"
+
 namespace {
 QString argListToString(const QStringList& argList){
 	return argList.join(" ");
@@ -120,6 +122,34 @@ UltragridWindow::UltragridWindow(QWidget *parent): QMainWindow(parent){
 
 	using namespace std::placeholders;
 	controlPort.addLineCallback(std::bind(&BandwidthWidget::parseLine, ui.send_bandwidth, _1));
+
+	controlPort.addLineCallback(std::bind(&UltragridWindow::recvFmtCallback, this, _1));
+}
+
+void UltragridWindow::clearFmtLabels(){
+	ui.recvVideoFmtLabel->setText("");
+	ui.recvAudioFmtLabel->setText("");
+};
+
+void UltragridWindow::recvFmtCallback(std::string_view line){
+	static constexpr std::string_view prefix = "stats ";
+	if(!sv_is_prefix(line, prefix))
+		return;
+
+	line.remove_prefix(prefix.size());
+
+	static constexpr std::string_view videoFmt = "new incoming video fmt: ";
+	static constexpr std::string_view audioFmt = "new incoming audio fmt: ";
+
+	if(sv_is_prefix(line, videoFmt)){
+		line.remove_prefix(videoFmt.size());
+		std::string fmt(sv_trim_whitespace_back(line));
+		ui.recvVideoFmtLabel->setText(fmt.c_str());
+	} else if(sv_is_prefix(line, audioFmt)){
+		line.remove_prefix(audioFmt.size());
+		std::string fmt(sv_trim_whitespace_back(line));
+		ui.recvAudioFmtLabel->setText(fmt.c_str());
+	}
 }
 
 void UltragridWindow::launchQuery(){
@@ -314,6 +344,8 @@ void UltragridWindow::start(){
 	ctx->args = launchArgs;
 	ctx->type = LaunchContext::Type::Run;
 
+	clearFmtLabels();
+
 	connect(&ctx->process, &QProcess::started,
 			[=]()
 			{
@@ -330,6 +362,7 @@ void UltragridWindow::start(){
 				ui.startButton->setEnabled(true);
 				ui.actionRefresh->setEnabled(true);
 				receiverLoss.reset();
+				clearFmtLabels();
 				rtcpRr.reset();
 				ui.send_bandwidth->reset();
 
diff --git a/gui/QT/window/ultragrid_window.hpp b/gui/QT/window/ultragrid_window.hpp
index 5601ada2b6..634f8882dd 100644
--- a/gui/QT/window/ultragrid_window.hpp
+++ b/gui/QT/window/ultragrid_window.hpp
@@ -44,6 +44,9 @@ class UltragridWindow : public QMainWindow{
 
 	void launchQuery();
 
+	void clearFmtLabels();
+	void recvFmtCallback(std::string_view line);
+
 	Ui::UltragridWindow ui;
 
 	QString ultragridExecutable;