HP Remote Graphics Software (RGS) Manual de usuario descargar pdf (Pagina 48)

Rgsender.Audio.Linux.DeviceName

If this property is set, RGS Sender attempts to connect to the device specied by this property. The command

pactl list is useful for determining the PulseAudio device names. To capture from a specic device,

specify the corresponding PulseAudio monitor source string (such as alsa_output.pci-0000_00_1b.

0.analog-stereo.monitor).

PulseAudio allows the user to congure and control the audio devices in the system. Changing the output

device during an RGS session results in a loss of audio. To restore audio, either reselect the original device or

stop and start the audio stream using the audio settings in RGS Receiver.

ALSA

When using the ALSA audio system to capture audio, an audio device is required to be installed on the sender

for application-generated audio to be sent to the receiver. Furthermore, the audio device installed in the

sender must have the ability to record from a control that is the mix of all audio signals. On a Windows

computer, by way of comparison, this control is often called Stereo Mix. Linux, however, does not follow a

standard naming convention for this control, hence the need to evaluate individual audio devices to

determine their suitability for use on Linux.

The audio devices on Linux are not consistent in the naming conventions of the audio controls. The RGS

Sender installer will attempt to adjust volume levels for known audio devices to allow audio to be captured.

This section describes how to adjust volume levels for the supported audio devices. This information may be

helpful for conguring audio devices that are not currently supported by the RGS Sender installer.

Volume levels can typically be adjusted through the Volume Control application. This is usually found in the

gnome panel or the system preferences menu. The Volume Control application may not show all available

volume controls. The preferences for the Volume Control application may need to be adjusted to allow access

to hidden volume controls.

The alsamixer is a command-line tool for adjusting volume. This application will not hide audio controls like

its GUI counterpart; however, it is not as intuitive. Press the h key after running alsamixer to get additional

information on how to control capture volumes.

Unsupported PCI audio devices are known to allow capture of application generated audio. The names of the

controls that need to be adjusted are not consistent. Names of controls that might need to be adjusted

include PCM, Capture, and Mix.

The device the audio is recorded from must be specied using the following property:

Rgsender.Audio.Linux.DeviceName

Run the command:

cat /proc/asound/devices

From this, you will see a list of the audio devices and it will look something like this:

0: [ 0] : control

1: : sequencer

8: [ 0- 0]: raw midi

16: [ 0- 0]: digital audio playback

17: [ 0- 1]: digital audio playback

24: [ 0- 0]: digital audio capture

32: [ 1] : control

38 Chapter 6 Using RGS features

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HP Remote Graphics Software (RGS) Manual de usuario Pagina 48