Audio-LADSPA

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Makefile.PL  view on Meta::CPAN

my $found = 0;
for (split/:/,$ENV{LADSPA_PATH}) {
    if (-f "$_/delay.$Config{so}") {
        $found = 1;
        last;
    }
}

unless ($found) {
	my $continue = prompt(
qq(the ladspa_sdk plugin "delay.$Config{so}" cannot be found in
LADSPA_PATH: "$ENV{LADSPA_PATH}"

The tests specifically need the plugins from the ladspa_sdk
package, with the LADSPA_PATH environment variable pointing 
to the directory where they are installed.

Please correct your LADSPA_PATH and/or download and  install
the SDK from from http://www.ladspa.org/

Makefile.PL  view on Meta::CPAN

installed, but most of the tests will  be skipped.

Do you want to proceed? y/n),"y");
    if ($continue !~ /^y/i) {
        exit;
    }
}

my $play_audio = 1;
if (! eval { require Audio::Play; } ) {
    $play_audio = prompt(
"No Audio::Play module was found on your system. Without it, 
we can't do audio output. If you want to test audio output,
answer yes to the following question. Audio::Play will then 
be added to the required module list. This means it will be
installed automatically if you're using the CPAN / CPANPLUS
modules.

Do you want to test audio output (requires Audio::Play)? y/n","n");
}
$play_audio = $play_audio =~ /^y/i ? 1 : 0;

ladspa.h  view on Meta::CPAN

     information dependent on the history of the plugin instance
     except for any data locations provided by connect_port() and any
     gain set by set_run_adding_gain(). If there is nothing for
     activate() to do then the plugin writer may provide a NULL rather
     than an empty function.

     When present, hosts must call this function once before run() (or
     run_adding()) is called for the first time. This call should be
     made as close to the run() call as possible and indicates to
     real-time plugins that they are now live. Plugins should not rely
     on a prompt call to run() after activate(). activate() may not be
     called again unless deactivate() is called first. Note that
     connect_port() may be called before or after a call to
     activate(). */
  void (*activate)(LADSPA_Handle Instance);

  /* This method is a function pointer that runs an instance of a
     plugin for a block. Two parameters are required: the first is a
     handle to the particular instance to be run and the second
     indicates the block size (in samples) for which the plugin
     instance may run.

ladspa.h  view on Meta::CPAN

                              LADSPA_Data   Gain);

  /* This is the counterpart to activate() (see above). If there is
     nothing for deactivate() to do then the plugin writer may provide
     a NULL rather than an empty function.

     Hosts must deactivate all activated units after they have been
     run() (or run_adding()) for the last time. This call should be
     made as close to the last run() call as possible and indicates to
     real-time plugins that they are no longer live. Plugins should
     not rely on prompt deactivation. Note that connect_port() may be
     called before or after a call to deactivate().

     Deactivation is not similar to pausing as the plugin instance
     will be reinitialised when activate() is called to reuse it. */
  void (*deactivate)(LADSPA_Handle Instance);

  /* Once an instance of a plugin has been finished with it can be
     deleted using the following function. The instance handle passed
     ceases to be valid after this call.