6a39e4f5f5
Renamed directory "dev" to "dev_tools". Replaced the ecasound-2.7.2 with a new download of ecasound. The reason is that the previous ecasound directory had all the Makefiles checked in with hardcoded paths from Naomi's computer. This prevented anyone else from being able to build. I copied over the modified version of ecacontrol.py.
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
/*************************************************************************
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* Implementation of the following:
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*
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* 1. Setup ECI to read audio from file, apply a 100Hz lowpass filter, and
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* send it to the soundcard (/dev/dsp).
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* 2. Every second, check the current position. If the stream has
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* been running for over 15 seconds, exit immediately. Also,
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* every second, increase the lowpass filter's cutoff frequency
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* by 500Hz.
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* 3. Stop the stream (if not already finished) and disconnect the
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* chainsetup. Print chain operator status info.
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************************************************************************/
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#include <iostream>
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#include <unistd.h>
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#include <eca-control-interface.h>
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/* compile with:
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*
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* c++ -o ecidoc_example ecidoc_example.cpp `libecasoundc-config --cflags --libs`
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*/
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int main(int argc, char *argv[])
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{
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double cutoff_inc = 500.0;
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ECA_CONTROL_INTERFACE e;
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e.command("cs-add play_chainsetup");
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e.command("c-add 1st_chain");
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e.command("ai-add foo.wav");
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e.command("ao-add /dev/dsp");
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e.command("cop-add -efl:100");
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e.command("cop-select 1");
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e.command("copp-select 1");
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e.command("cs-connect");
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e.command("start");
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while(1) {
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sleep(1);
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e.command("engine-status");
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if (e.last_string() != "running") break;
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e.command("get-position");
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double curpos = e.last_float();
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if (curpos > 15.0) break;
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e.command("copp-get");
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double next_cutoff = cutoff_inc + e.last_float();
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e.command_float_arg("copp-set", next_cutoff);
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}
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e.command("stop");
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e.command("cs-disconnect");
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e.command("cop-status");
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std::cerr << "Chain operator status: " << e.last_string() << std::endl;
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return(0);
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}
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