[C++-sig] Boost Python Question - Multiple Classes and Modules not appearing as attribute
Jon Lederman
jonlederman at gmail.com
Thu Sep 8 17:30:40 EDT 2016
Hi,
Thanks for responding. Here is my header file. I am compiling this to a shared object called opus_strategy.so. If I set the argument of BOOST_PYTHON_MODULE to opus_encoder_strategy, and compile my .so file to have the name opus_encoder_strategy.so,I can load the boost python module into my python interpreter and see the OpusEncoderStrategy class as an attribute.
However, if I choose other names such as opus_strategy for the argument to BOOST_PYTHON_MODULE, when I load the boost python object it doesn’t appear to have any recognized attributes. I don’t understand why the name should matter. As I had noted in my previous email, I would like to have a shared object file with the name opus_strategy.so that encompasses a set of classes. Just can’t figure out how to get it to work. I am on OS X, BTW if that matters.
Any help would be greatly appreciated.
Thanks.
-Jon
#ifndef OPUS_ENCODER_STRATEGY_H_
#define OPUS_ENCODER_STRATEGY_H_
#include "memory"
#include "opus/opus.h"
#include "opus/opus_defines.h"
#include "opus/opus_multistream.h"
#include "opus/opus_types.h"
#include <boost/python.hpp>
#include <boost/numpy.hpp>
#include <exception>
#include <memory>
#include <map>
#include <vector>
#include <iostream>
namespace bp = boost::python;
namespace np = boost::numpy;
using namespace std;
class OpusEncoderStrategy {
public:
OpusEncoderStrategy(const int sample_rate, const int number_channels, const int opus_application);
~OpusEncoderStrategy();
opus_int32 encode(const float* pcm, const int frame_size, const unsigned char* data, opus_int32 max_data_bytes);
bool setComplexity(const int c);
int getComplexity();
private:
bool encoderCtl();
int getPacketDurationBytes();
OpusEncoder* encoder;
int fs;
int channels;
int application;
int error;
};
BOOST_PYTHON_MODULE(opus_strategy)
{
using namespace boost::python;
class_<OpusEncoderStrategy>("OpusEncoderStrategy", init<const int, const int, const int>())
.def("setComplexity", &OpusEncoderStrategy::setComplexity)
.def("getComplexity", &OpusEncoderStrategy::getComplexity);
}
#endif
> On Sep 8, 2016, at 4:47 PM, Stefan Seefeld <stefan at seefeld.name> wrote:
>
> Hi Jon,
>
> what you are describing makes perfect sense, and should work without
> problem. From your description it isn't clear why this isn't working, so
> I suggest you put together a self-contained test that doesn't work as
> you expect, and send that out so we can have a look. Otherwise we'd have
> to guess.
> The online docs at http://boostorg.github.io/python/doc/html/index.html
> should contain everything you need.
>
> Stefan
>
> --
>
> ...ich hab' noch einen Koffer in Berlin...
>
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