Tag Archives: conversion

C++ enum to Python namedtuple (cont.)

Posted by Wujie of Dasheshire on

Here is a way to convert a C++ enum with values to Python.
C++ code:

typedef enum
{
   LADYBUG_RAW_CAM0           = ( 0x1 << 0 ),
   LADYBUG_RAW_CAM1           = ( 0x1 << 1 ),
   LADYBUG_RAW_CAM2           = ( 0x1 << 2 ),
   LADYBUG_RAW_CAM3           = ( 0x1 << 3 ),
   LADYBUG_RAW_CAM4           = ( 0x1 << 4 ),
   LADYBUG_RAW_CAM5           = ( 0x1 << 5 ),
   LADYBUG_ALL_RAW_IMAGES     =  0x0000003F,

   ...

   LADYBUG_PANORAMIC          = ( 0x1 << 12 ),

   LADYBUG_DOME               = ( 0x1 << 13 ),

   LADYBUG_SPHERICAL          = ( 0x1 << 14 ),

   LADYBUG_ALL_CAMERAS_VIEW   = ( 0x1 << 15 ),

   LADYBUG_ALL_OUTPUT_IMAGE   = 0x7FFFFFFF,

} LadybugOutputImage

The Python version:

LadybugOutputImage = dict(
   LADYBUG_RAW_CAM0           = ( 0x1 << 0 ),
   LADYBUG_RAW_CAM1           = ( 0x1 << 1 ),
   LADYBUG_RAW_CAM2           = ( 0x1 << 2 ),
   LADYBUG_RAW_CAM3           = ( 0x1 << 3 ),
   LADYBUG_RAW_CAM4           = ( 0x1 << 4 ),
   LADYBUG_RAW_CAM5           = ( 0x1 << 5 ),
   LADYBUG_ALL_RAW_IMAGES     =  0x0000003F,

   ...

   LADYBUG_PANORAMIC          = ( 0x1 << 12 ),

   LADYBUG_DOME               = ( 0x1 << 13 ),

   LADYBUG_SPHERICAL          = ( 0x1 << 14 ),

   LADYBUG_ALL_CAMERAS_VIEW   = ( 0x1 << 15 ),

   LADYBUG_ALL_OUTPUT_IMAGE   = 0x7FFFFFFF  )
LadybugOutputImage = namedtuple('Enum',
                       LadybugOutputImage.keys() )(**LadybugOutputImage)

Or even better, just get rid of all the packaging and commas on this type if it’s not too long and you have the patience. But you will also have to correct the indenting. Maybe there is a program out there that can do this editing for you.

   LADYBUG_RAW_CAM0           = ( 0x1 << 0 )
   LADYBUG_RAW_CAM1           = ( 0x1 << 1 )
   LADYBUG_RAW_CAM2           = ( 0x1 << 2 )
   LADYBUG_RAW_CAM3           = ( 0x1 << 3 )
   ...
   LADYBUG_ALL_CAMERAS_VIEW   = ( 0x1 << 15 )
   LADYBUG_ALL_OUTPUT_IMAGE   = 0x7FFFFFFF