Add support for a/v input/output selection

From: Hans Verkuil <hverkuil@xs4all.nl>

Add missing audio output enumeration to v4l2-ctl.
Add input/output and audio input/output selection to qv4l2.


Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

3 files changed, 117 insertions, 0 deletions

diff --git a/test/qv4l2/qv4l2.cpp b/test/qv4l2/qv4l2.cpp
index e3d6bf775..2299b9be7 100644
--- a/test/qv4l2/qv4l2.cpp
+++ b/test/qv4l2/qv4l2.cpp
@@ -118,6 +118,7 @@ void ApplicationWindow::setDevice(const QString &device)
 
 	fd = ::open(device, O_RDONLY);
 	if (fd >= 0) {
+		addGeneralTab();
 		addTabs();
 	}
 	if (QWidget *current = tabs->currentPage()) {
@@ -128,6 +129,79 @@ void ApplicationWindow::setDevice(const QString &device)
 	setCentralWidget(tabs);
 }
 
+void ApplicationWindow::addGeneralTab()
+{
+	int cnt = 0;
+	QVBox *vbox = new QVBox(tabs);
+	QGrid *grid = new QGrid(4, vbox);
+	grid->setSpacing(3);
+	tabs->addTab(vbox, "General");
+
+	struct v4l2_input vin;
+	memset(&vin, 0, sizeof(vin));
+	if (ioctl(fd, VIDIOC_ENUMINPUT, &vin) >= 0) {
+		QLabel *label = new QLabel("Input", grid);
+		label->setAlignment(Qt::AlignRight);
+		QComboBox *combo = new QComboBox(grid);
+		while (ioctl(fd, VIDIOC_ENUMINPUT, &vin) >= 0) {
+			combo->insertItem((char *)vin.name);
+			vin.index++;
+		}
+		connect(combo, SIGNAL(activated(int)), SLOT(inputChanged(int)));
+		cnt++;
+	}
+
+	struct v4l2_output vout;
+	memset(&vout, 0, sizeof(vout));
+	if (ioctl(fd, VIDIOC_ENUMOUTPUT, &vout) >= 0) {
+		QLabel *label = new QLabel("Output", grid);
+		label->setAlignment(Qt::AlignRight);
+		QComboBox *combo = new QComboBox(grid);
+		while (ioctl(fd, VIDIOC_ENUMOUTPUT, &vout) >= 0) {
+			combo->insertItem((char *)vout.name);
+			vout.index++;
+		}
+		connect(combo, SIGNAL(activated(int)), SLOT(outputChanged(int)));
+		cnt++;
+	}
+
+	struct v4l2_audio vaudio;
+	memset(&vaudio, 0, sizeof(vaudio));
+	if (ioctl(fd, VIDIOC_ENUMAUDIO, &vaudio) >= 0) {
+		QLabel *label = new QLabel("Input Audio", grid);
+		label->setAlignment(Qt::AlignRight);
+		QComboBox *combo = new QComboBox(grid);
+		vaudio.index = 0;
+		while (ioctl(fd, VIDIOC_ENUMAUDIO, &vaudio) >= 0) {
+			combo->insertItem((char *)vaudio.name);
+			vaudio.index++;
+		}
+		connect(combo, SIGNAL(activated(int)), SLOT(inputAudioChanged(int)));
+		cnt++;
+	}
+
+	struct v4l2_audioout vaudioout;
+	memset(&vaudioout, 0, sizeof(vaudioout));
+	if (ioctl(fd, VIDIOC_ENUMAUDOUT, &vaudioout) >= 0) {
+		QLabel *label = new QLabel("Output Audio", grid);
+		label->setAlignment(Qt::AlignRight);
+		QComboBox *combo = new QComboBox(grid);
+		while (ioctl(fd, VIDIOC_ENUMAUDOUT, &vaudioout) >= 0) {
+			combo->insertItem((char *)vaudioout.name);
+			vaudioout.index++;
+		}
+		connect(combo, SIGNAL(activated(int)), SLOT(outputAudioChanged(int)));
+		cnt++;
+	}
+
+	if (cnt & 1) {
+		new QWidget(grid);
+		new QWidget(grid);
+	}
+	QWidget *stretch = new QWidget(grid);
+	stretch->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Ignored);
+}
+
 void ApplicationWindow::addTabs()
 {
 	struct v4l2_queryctrl qctrl;
@@ -629,6 +703,31 @@ void ApplicationWindow::closeEvent( QCloseEvent* ce )
 	ce->accept();
 }
 
+void ApplicationWindow::inputChanged(int input)
+{
+	ioctl(fd, VIDIOC_S_INPUT, &input);
+}
+
+void ApplicationWindow::outputChanged(int output)
+{
+	ioctl(fd, VIDIOC_S_OUTPUT, &output);
+}
+
+void ApplicationWindow::inputAudioChanged(int input)
+{
+	struct v4l2_audio vaudio;
+	memset(&vaudio, 0, sizeof(vaudio));
+	vaudio.index = input;
+	ioctl(fd, VIDIOC_S_AUDIO, &vaudio);
+}
+
+void ApplicationWindow::outputAudioChanged(int output)
+{
+	struct v4l2_audioout vaudioout;
+	memset(&vaudioout, 0, sizeof(vaudioout));
+	vaudioout.index = output;
+	ioctl(fd, VIDIOC_S_AUDOUT, &vaudioout);
+}
 
 void ApplicationWindow::about()
 {
diff --git a/test/qv4l2/qv4l2.h b/test/qv4l2/qv4l2.h
index f3ecf7262..75b423ebf 100644
--- a/test/qv4l2/qv4l2.h
+++ b/test/qv4l2/qv4l2.h
@@ -51,11 +51,16 @@ protected:
 private slots:
     void choose();
     void ctrlAction(int);
+    void inputChanged(int);
+    void outputChanged(int);
+    void inputAudioChanged(int);
+    void outputAudioChanged(int);
 
     void about();
 
 private:
     void addTabs();
+    void addGeneralTab();
     void finishGrid(QWidget *vbox, QGrid *grid, unsigned ctrl_class, bool odd);
     void addCtrl(QGrid *grid, const struct v4l2_queryctrl &qctrl);
     void updateCtrl(unsigned id);
diff --git a/test/v4l2-ctl.cpp b/test/v4l2-ctl.cpp
index 6e044e563..63bc3e82a 100644
--- a/test/v4l2-ctl.cpp
+++ b/test/v4l2-ctl.cpp
@@ -1099,6 +1099,19 @@ int main(int argc, char **argv)
 		}
 	}
 
+	if (options[OptListAudioOutputs]) {
+		struct v4l2_audioout vaudio;	/* list audio outputs */
+		vaudio.index = 0;
+		printf("ioctl: VIDIOC_ENUMAUDOUT\n");
+		while (ioctl(fd, VIDIOC_ENUMAUDOUT, &vaudio) >= 0) {
+			if (vaudio.index)
+				printf("\n");
+			printf("\tOutput  : %d\n", vaudio.index);
+			printf("\tName    : %s\n", vaudio.name);
+			vaudio.index++;
+		}
+	}
+
 	if (options[OptSetAudioInput]) {
 		if (doioctl(fd, VIDIOC_S_AUDIO, &vaudio, "VIDIOC_S_AUDIO") == 0)
 			printf("Audio input set to %d\n", vaudio.index);