Le 04/01/13 16:35, Marcus Tomlinson a écrit :
On 04 Jan 2013, at 16:53, "Vicente J. Botet Escriba" <vicente.botet@wanadoo.fr> wrote:
Le 04/01/13 12:56, Marcus Tomlinson a écrit :
On Fri, Jan 4, 2013 at 1:24 PM, Vicente J. Botet Escriba < vicente.botet@wanadoo.fr> wrote:
Le 04/01/13 11:36, Marcus Tomlinson a écrit :
On 04 Jan 2013, at 11:46 AM, "Vicente J. Botet Escriba" <
Could you show a simple example that makes use of this kind of changes? BTW, what happens when you connect a char and you try to get/set an int or a complex? Do you get an exception? Here's an example of the above vector<char> to a vector<int> situation (this component sets the gain of the audio signal passing through it):
virtual void Process_( DspSignalBus& inputs, DspSignalBus& outputs ) {
// Audio input of char samples
std::vector< char > _charStream; if( inputs.GetValue( 0, _charStream ) ) { for( unsigned long i = 0; i < _charStream.size(); i++ ) { _charStream[i] *= _gain; } outputs.SetValue( 0, _charStream ); }
// Audio input of int samples
std::vector< int > _intStream; else if( inputs.GetValue( 0, _intStream ) ) { for( unsigned long i = 0; i < _intStream.size(); i++ ) { _intStream[i] *= _gain; } outputs.SetValue( 0, _intStream ); }
}
The GetValue() and SetValue() methods simply return false if the type you're trying to get/set is mismatched. We use this in order to determine what data we have received. Couldn't this signal (if it is a single one) be split on two signals towards two specific components? Or, couldn't a signal with type boost::variant<std::vector<char>, std::vector<int>> be used instead? Yes and yes :) But the option you choose depends on the application. It could get overly complicated if say, an mp3 decoder component has 20 output ports per sample type, or say a variant that extends across a whole line. Having options means flexibility. And you know how I feel about that :D
I was just trying to see if the dynamic is a "must have" or a "nice to have". From your answer I would say it is not a must have feature, and typing the signals will give some type safety that a lot of us like. Best, Vicente