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better Jack error messages

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This commit is contained in:
Volker Fischer 2013-03-28 07:52:46 +00:00
parent 1de080f235
commit 8320b93a9a
1 changed files with 52 additions and 22 deletions
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68
linux/sound.cpp
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@ -1,10 +1,11 @@
/******************************************************************************\
* Copyright (c) 2004-2011
* Copyright (c) 2004-2013
*
* Author(s):
* Volker Fischer
*
* This code is based on the simple_client example of the Jack audio interface.
*
******************************************************************************
*
* This program is free software; you can redistribute it and/or modify it under
@ -35,7 +36,11 @@ void CSound::OpenJack()
if ( pJackClient == NULL )
{
throw CGenErr ( tr ( "Jack server not running" ) );
throw CGenErr ( tr ( "The Jack server is not running. This software "
"requires a Jack server to run. Normally if the Jack server is "
"not running this software will automatically start the Jack server. "
"It seems that this auto start has not worked. Try to start the Jack "
"server manually." ) );
}
// tell the JACK server to call "process()" whenever
@ -48,14 +53,17 @@ void CSound::OpenJack()
// register shutdown callback function
jack_on_shutdown ( pJackClient, shutdownCallback, this );
// TEST check sample rate, if not correct, just fire error
// check sample rate, if not correct, just fire error
if ( jack_get_sample_rate ( pJackClient ) != SYSTEM_SAMPLE_RATE_HZ )
{
throw CGenErr ( tr ( "Jack server sample rate is different from "
"the required one. The required sample rate is: " ) +
QString().setNum ( SYSTEM_SAMPLE_RATE_HZ ) + tr ( " Hz. You can "
"use a tool like QJackCtrl to adjust the Jack server sample "
"rate." ) );
throw CGenErr ( tr ( "The Jack server sample rate is different from "
"the required one. The required sample rate is: <b>" ) +
QString().setNum ( SYSTEM_SAMPLE_RATE_HZ ) + tr ( " Hz</b>. You can "
"use a tool like <i><a href=""http://qjackctl.sourceforge.net"">QJackCtl</a></i> "
"to adjust the Jack server sample rate.<br>Make sure to set the "
"<b>Frames/Period</b> to a low value like <b>" ) +
QString().setNum ( SYSTEM_FRAME_SIZE_SAMPLES * FRAME_SIZE_FACTOR_PREFERRED ) +
tr ( "</b> to achieve a low delay." ) );
}
// create four ports (two for input, two for output -> stereo)
@ -76,7 +84,7 @@ if ( jack_get_sample_rate ( pJackClient ) != SYSTEM_SAMPLE_RATE_HZ )
( output_port_left == NULL ) ||
( output_port_right == NULL ) )
{
throw CGenErr ( tr ( "Jack port registering failed" ) );
throw CGenErr ( tr ( "The Jack port registering failed." ) );
}
const char** ports;
@ -84,7 +92,7 @@ if ( jack_get_sample_rate ( pJackClient ) != SYSTEM_SAMPLE_RATE_HZ )
// tell the JACK server that we are ready to roll
if ( jack_activate ( pJackClient ) )
{
throw CGenErr ( tr ( "Cannot activate client" ) );
throw CGenErr ( tr ( "Cannot activate the Jack client." ) );
}
// connect the ports, note: you cannot do this before
@ -94,21 +102,31 @@ if ( jack_get_sample_rate ( pJackClient ) != SYSTEM_SAMPLE_RATE_HZ )
if ( ( ports = jack_get_ports ( pJackClient, NULL, NULL,
JackPortIsPhysical | JackPortIsOutput ) ) == NULL )
{
throw CGenErr ( tr ( "Cannot find any physical capture ports" ) );
throw CGenErr ( tr ( "There are no physical capture ports available. "
"This software requires at least one stereo input channel available. "
"Maybe you have selected the wrong sound card in the Jack server "
"configuration.<br>"
"You can use a tool like <i><a href=""http://qjackctl.sourceforge.net"">QJackCtl</a></i> "
"to adjust the Jack server settings." ) );
}
if ( !ports[1] )
{
throw CGenErr ( tr ( "Cannot find enough physical capture ports" ) );
throw CGenErr ( tr ( "There are no physical capture ports available. "
"This software requires at least one stereo input channel available. "
"Maybe you have selected the wrong sound card in the Jack server "
"configuration.<br>"
"You can use a tool like <i><a href=""http://qjackctl.sourceforge.net"">QJackCtl</a></i> "
"to adjust the Jack server settings." ) );
}
if ( jack_connect ( pJackClient, ports[0], jack_port_name ( input_port_left ) ) )
{
throw CGenErr ( tr ( "Cannot connect input ports" ) );
throw CGenErr ( tr ( "Cannot connect the Jack input ports" ) );
}
if ( jack_connect ( pJackClient, ports[1], jack_port_name ( input_port_right ) ) )
{
throw CGenErr ( tr ( "Cannot connect input ports" ) );
throw CGenErr ( tr ( "Cannot connect the Jack input ports" ) );
}
free ( ports );
@ -116,21 +134,31 @@ if ( jack_get_sample_rate ( pJackClient ) != SYSTEM_SAMPLE_RATE_HZ )
if ( ( ports = jack_get_ports ( pJackClient, NULL, NULL,
JackPortIsPhysical | JackPortIsInput ) ) == NULL )
{
throw CGenErr ( tr ( "Cannot find any physical playback ports" ) );
throw CGenErr ( tr ( "There are no physical playback ports available. "
"This software requires at least one stereo output channel available. "
"Maybe you have selected the wrong sound card in the Jack server "
"configuration.<br>"
"You can use a tool like <i><a href=""http://qjackctl.sourceforge.net"">QJackCtl</a></i> "
"to adjust the Jack server settings." ) );
}
if ( !ports[1] )
{
throw CGenErr ( tr ( "Cannot find enough physical playback ports" ) );
throw CGenErr ( tr ( "There are no physical playback ports available. "
"This software requires at least one stereo output channel available. "
"Maybe you have selected the wrong sound card in the Jack server "
"configuration.<br>"
"You can use a tool like <i><a href=""http://qjackctl.sourceforge.net"">QJackCtl</a></i> "
"to adjust the Jack server settings." ) );
}
if ( jack_connect ( pJackClient, jack_port_name ( output_port_left ), ports[0] ) )
{
throw CGenErr ( tr ( "Cannot connect output ports" ) );
throw CGenErr ( tr ( "Cannot connect the Jack output ports." ) );
}
if ( jack_connect ( pJackClient, jack_port_name ( output_port_right ), ports[1] ) )
{
throw CGenErr ( tr ( "Cannot connect output ports" ) );
throw CGenErr ( tr ( "Cannot connect the Jack output ports." ) );
}
free ( ports );
@ -269,7 +297,9 @@ void CSound::shutdownCallback ( void* )
{
// without a Jack server, our software makes no sense to run, throw
// error message
throw CGenErr ( tr ( "Jack server was shut down" ) );
throw CGenErr ( tr ( "The Jack server was shut down. This software "
"requires a Jack server to run. Try to restart the software to "
"solve the issue." ) );
}
#endif // WITH_SOUND