Re: Multitrack Recording via Control Interface

[Markus Luttenberger]

Hello!


Ok, I've fixed some stuff by myself but the main problem still exists.
Now I know that my chainsetup is somehow invalid thus it cannot be
connected - but no idea what's wrong.

This is the current code:

>>>>> SNIP >>>>>

...
int sources = 3;  // user input
...

//--------------------------------------------------------------------------
// construct ECA control interface and configure it for recording
ECA_CONTROL_INTERFACE e;
const string current_time(getCurrentTime());

e.command("cs-add recording_chainsetup");

for (int count = 1; count <= sources; count++)
{
     const char source_no = '0' + count;
     string file_name = "./" + current_time + "-s" + source_no + ".wav";
     // the command chain
     e.command("c-add chain" + source_no);
     // the HW input source
     e.command("ai-add alsahw," + source_no + ',' + '0');
     // output file name
     e.command("ao-add " + file_name);
}

e.command("cs-select recording_chainsetup");
e.command("c-select all");
e.command("cs-is-valid");
cout << "cs is valid: " << e.last_integer() << endl;
e.command("cs-connect");
e.command("start");
cout << "Starting recording...\n";

while (1)
{
     sleep(1);
     e.command("engine-status");
     if (e.last_string() != "running")
         break;
}

e.command("stop");
e.command("cs-disconnect");
cerr << "Error: " << e.last_error() << endl;

<<<<< SNAP <<<<<

I also figured out why I didn't get any status information with
"cs-status" first (should read the manual more carefully).

This is my output:


>>>>> SNIP >>>>>

***********************************************************************
* Message from libecasoundc:
*
* 'ECASOUND' environment variable not set. Using the default value
* value 'ECASOUND=ecasound'.
***********************************************************************

cs is valid: 0
Starting recording...
Error: ERROR:  Selected chainsetup cannot be connected. Can't perform
requested action.

<<<<< SNAP <<<<<


Oh, and i'm using ecasound v2.6.0.



greetings..
..Markus


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[Joel Roth-2]

On Wed, Aug 12, 2009 at 04:08:10PM +0200, Markus Luttenberger wrote:

> Hello!
>
>
> Ok, I've fixed some stuff by myself but the main problem still exists.
> Now I know that my chainsetup is somehow invalid thus it cannot be
> connected - but no idea what's wrong.
>
> This is the current code:
>
> >>>>> SNIP >>>>>
>
> ...
> int sources = 3;  // user input
> ...
>
> //--------------------------------------------------------------------------
> // construct ECA control interface and configure it for recording
> ECA_CONTROL_INTERFACE e;
> const string current_time(getCurrentTime());
>
> e.command("cs-add recording_chainsetup");
>
> for (int count = 1; count <= sources; count++)
> {
>      const char source_no = '0' + count;
>      string file_name = "./" + current_time + "-s" + source_no + ".wav";
>      // the command chain
>      e.command("c-add chain" + source_no);
>      // the HW input source
>      e.command("ai-add alsahw," + source_no + ',' + '0');
>      // output file name
>      e.command("ao-add " + file_name);
> }
>
> e.command("cs-select recording_chainsetup");
> e.command("c-select all");
> e.command("cs-is-valid");
> cout << "cs is valid: " << e.last_integer() << endl;
> e.command("cs-connect");
> e.command("start");
> cout << "Starting recording...\n";
>
> while (1)
> {
>      sleep(1);
>      e.command("engine-status");
>      if (e.last_string() != "running")
>          break;
> }
>
> e.command("stop");
> e.command("cs-disconnect");
> cerr << "Error: " << e.last_error() << endl;
>
> <<<<< SNAP <<<<<
>
> I also figured out why I didn't get any status information with
> "cs-status" first (should read the manual more carefully).
>
> This is my output:
>
>
> >>>>> SNIP >>>>>
>
> ***********************************************************************
> * Message from libecasoundc:
> *
> * 'ECASOUND' environment variable not set. Using the default value
> * value 'ECASOUND=ecasound'.
> ***********************************************************************
>
> cs is valid: 0

Hi Markus,

The Ecasound engine can do nothing without a valid chain
setup, i.e. cs_is_valid: 1

I find it easier for troubleshooting
to generate my chain setups as .ecs files.

then use ECI commands to do something like

cs-load setup.ecs
start

Perhaps someone else can help you debug the
code you posted.

Good luck,

Joel

> Starting recording...
> Error: ERROR:  Selected chainsetup cannot be connected. Can't perform
> requested action.
>
> <<<<< SNAP <<<<<
>
>
> Oh, and i'm using ecasound v2.6.0.
>
>
>
> greetings..
> ..Markus
>
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Ecasound-list mailing list
> Ecasound-list@...
> https://lists.sourceforge.net/lists/listinfo/ecasound-list

--
Joel Roth

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_______________________________________________
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[Markus Luttenberger]

Hey!

I've fixed the code. Apparently the chain setup wasn't that wrong, it
was more a fault of my bad C++ skill...

>>>>>>> SNIP >>>>>
>> ...
>> int sources = 3;  // user input
>> ...
>>
>> //--------------------------------------------------------------------------
>> // construct ECA control interface and configure it for recording
>> ECA_CONTROL_INTERFACE e;
>> const string current_time(getCurrentTime());
>>
>> e.command("cs-add recording_chainsetup");
>>
>> for (int count = 1; count <= sources; count++)
>> {
>>      const char source_no = '0' + count;
>>      string file_name = "./" + current_time + "-s" + source_no + ".wav";
>>      // the command chain
>>      e.command("c-add chain" + source_no);
>>      // the HW input source
>>      e.command("ai-add alsahw," + source_no + ',' + '0');

The last two lines could never have worked in C++! This is no string
concatenation, this is pointer movement  :/ ...


greetings..
..Markus


------------------------------------------------------------------------------
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trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now.  http://p.sf.net/sfu/bobj-july
_______________________________________________
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Ecasound-list@...
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