Congegni/sintonia
7
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

ecasound 2.7.2 (2010) package. ubuntu's ecasound package is only at ecasound 2.2 way back from 2003. had to modify ecacontrol.py to use subprocess module instead of deprecated popen2

Browse source
This commit is contained in:
Naomi 2011-03-05 13:24:27 -05:00
parent 4b4174fe50
commit e2406e2501
430 changed files with 168506 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

55
ecasound-2.7.2/examples/ecidoc_example.cpp Normal file
View file

@ -0,0 +1,55 @@
/*************************************************************************
* Implementation of the following:
*
* 1. Setup ECI to read audio from file, apply a 100Hz lowpass filter, and
* send it to the soundcard (/dev/dsp).
* 2. Every second, check the current position. If the stream has
* been running for over 15 seconds, exit immediately. Also,
* every second, increase the lowpass filter's cutoff frequency
* by 500Hz.
* 3. Stop the stream (if not already finished) and disconnect the
* chainsetup. Print chain operator status info.
************************************************************************/
#include <iostream>
#include <unistd.h>
#include <eca-control-interface.h>
/* compile with:
*
* c++ -o ecidoc_example ecidoc_example.cpp `libecasoundc-config --cflags --libs`
*/
int main(int argc, char *argv[])
{
double cutoff_inc = 500.0;
ECA_CONTROL_INTERFACE e;
e.command("cs-add play_chainsetup");
e.command("c-add 1st_chain");
e.command("ai-add foo.wav");
e.command("ao-add /dev/dsp");
e.command("cop-add -efl:100");
e.command("cop-select 1");
e.command("copp-select 1");
e.command("cs-connect");
e.command("start");
while(1) {
sleep(1);
e.command("engine-status");
if (e.last_string() != "running") break;
e.command("get-position");
double curpos = e.last_float();
if (curpos > 15.0) break;
e.command("copp-get");
double next_cutoff = cutoff_inc + e.last_float();
e.command_float_arg("copp-set", next_cutoff);
}
e.command("stop");
e.command("cs-disconnect");
e.command("cop-status");
std::cerr << "Chain operator status: " << e.last_string() << std::endl;
return(0);
}