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https://issues.apache.org/jira/browse/GUACAMOLE-1413?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Juergen Kuri updated GUACAMOLE-1413:
------------------------------------
    Description: 
h3. Context

We want to use the Guacamole RDP proxy server with full audio support using
 # audio input redirection, rule {{enable-audio-input=true}}
 # audio output redirection, rule {{disable-audio=false}}

In the source code, header file {{src/pulse/pulse/pulse.h,}} we see the 
following constants for the Pulse Audio library for PCM modulator 
parametrisation of the RDP server:
{code:c}
/**
 * Rate of audio to stream, in Hz.
 */
#define GUAC_PULSE_AUDIO_RATE 44100
 
/**
 * The number of channels to stream.
 */
#define GUAC_PULSE_AUDIO_CHANNELS 2
 
/**
 * The number of bits per sample.
 */
#define GUAC_PULSE_AUDIO_BPS 16
{code}
h4. Problem

Parameter of interest:
 * {{GUAC_PULSE_AUDIO_CHANNELS 2}}

For remote users with an internet connection with low network bandwidth, it 
might be useful to have sessions with just *_one_* audio channel, mono instead 
of stereo expecting utilising just half of the network bandwidth for the part 
of audio blob transmission.

Is this assumption correct, transmitting just one audio channel would half the 
network bandwidth utilisation for audio blobs?
h3. Feature

Add another rule parameter for an individual RDP server session or connection 
respectively
 * for database table {{guacamole_connection_parameter}}

which allows us to parametrise the number of simultaneous audio channels to be 
transmitted *_in both redirections_*, audio in- and output.

Possible parameter names might be:
 * {{disable-audio-stereo}}, default {{false}}
 * {{enable-audio-mono}}, default {{false}}
 * {{audio-channels}}, \{1|2}, default {{2}}

If this is not feasible or difficult to implement for some reasons, add a 
corresponding parameter to daemon configuration file
 * {{guacd.conf}}
 * or {{guacamole.properties}}

affecting all RDP sessions in the same way.

  was:
h3. Context

We want to use the Guacamole RDP proxy server with full audio support using
 # audio input redirection, rule {{enable-audio-input=true}}
 # audio output redirection, rule {{disable-audio=false}}

In the source code, header file {{src/pulse/pulse/pulse.h,}} we see the 
following constants for Pulse Audio library for PCM modulator parametrisation 
of the RDP server:
{code:c}
/**
 * Rate of audio to stream, in Hz.
 */
#define GUAC_PULSE_AUDIO_RATE 44100
 
/**
 * The number of channels to stream.
 */
#define GUAC_PULSE_AUDIO_CHANNELS 2
 
/**
 * The number of bits per sample.
 */
#define GUAC_PULSE_AUDIO_BPS 16
{code}
h4. Problem

Parameter of interest:
 * {{GUAC_PULSE_AUDIO_CHANNELS 2}}

For remote users with an internet connection with low network bandwidth, it 
might be useful to have sessions with just *_one_* audio channel, mono instead 
of stereo expecting utilising just half of the network bandwidth for the part 
of audio blob transmission.

Is this assumption correct, transmitting just one audio channel would half the 
network bandwidth utilisation for audio blobs?
h3. Feature

Add another rule parameter for an individual RDP server session or connection 
respectively
 * for database table {{guacamole_connection_parameter}}

which allows us to parametrise the number of simultaneous audio channels to be 
transmitted *_in both redirections_*, audio in- and output.

Possible parameter names might be:
 * {{disable-audio-stereo}}, default {{false}}
 * {{enable-audio-mono}}, default {{false}}
 * {{audio-channels}}, {1\|2\}, default {{2}}

If this is not feasible or difficult to implement for some reasons, add a 
corresponding parameter to daemon configuration file
 * {{guacd.conf}}
 * or {{guacamole.properties}}

affecting all RDP sessions in the same way.


> RDP Session Parameter for the Number of Audio Channels to be transmitted
> ------------------------------------------------------------------------
>
>                 Key: GUACAMOLE-1413
>                 URL: https://issues.apache.org/jira/browse/GUACAMOLE-1413
>             Project: Guacamole
>          Issue Type: New Feature
>          Components: guacamole, guacd
>            Reporter: Juergen Kuri
>            Priority: Major
>
> h3. Context
> We want to use the Guacamole RDP proxy server with full audio support using
>  # audio input redirection, rule {{enable-audio-input=true}}
>  # audio output redirection, rule {{disable-audio=false}}
> In the source code, header file {{src/pulse/pulse/pulse.h,}} we see the 
> following constants for the Pulse Audio library for PCM modulator 
> parametrisation of the RDP server:
> {code:c}
> /**
>  * Rate of audio to stream, in Hz.
>  */
> #define GUAC_PULSE_AUDIO_RATE 44100
>  
> /**
>  * The number of channels to stream.
>  */
> #define GUAC_PULSE_AUDIO_CHANNELS 2
>  
> /**
>  * The number of bits per sample.
>  */
> #define GUAC_PULSE_AUDIO_BPS 16
> {code}
> h4. Problem
> Parameter of interest:
>  * {{GUAC_PULSE_AUDIO_CHANNELS 2}}
> For remote users with an internet connection with low network bandwidth, it 
> might be useful to have sessions with just *_one_* audio channel, mono 
> instead of stereo expecting utilising just half of the network bandwidth for 
> the part of audio blob transmission.
> Is this assumption correct, transmitting just one audio channel would half 
> the network bandwidth utilisation for audio blobs?
> h3. Feature
> Add another rule parameter for an individual RDP server session or connection 
> respectively
>  * for database table {{guacamole_connection_parameter}}
> which allows us to parametrise the number of simultaneous audio channels to 
> be transmitted *_in both redirections_*, audio in- and output.
> Possible parameter names might be:
>  * {{disable-audio-stereo}}, default {{false}}
>  * {{enable-audio-mono}}, default {{false}}
>  * {{audio-channels}}, \{1|2}, default {{2}}
> If this is not feasible or difficult to implement for some reasons, add a 
> corresponding parameter to daemon configuration file
>  * {{guacd.conf}}
>  * or {{guacamole.properties}}
> affecting all RDP sessions in the same way.



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