Low-level API

Low-level API fully copies the C API and is contained in the quirc.api module.

See example for workflow.

Warning: you will need to use ctypes here manually.

Functions

Initialization

Recognition

Extraction

Miscellaneous

Classes

Example

from quirc import api
from PIL import Image

image = Image.open('images/qr-code.png')
width, height = image.size

# Convert image to the grayscale mode
if not image.mode in ('L', '1'):
    image = image.convert('L')
pixels = image.load()

obj = api.new()
api.resize(obj, width, height)

buffer = api.begin(obj, width, height)

# Fill buffer with a image pixels. One cell, one pixel.
idx = 0
for i in range(width):
    for j in range(height):
        buffer[idx] = ctypes.c_uint8(pixels[j, i])
        idx += 1

# Finish image recognition
api.end(obj)

code = api.structures.Code()
data = api.structures.Data()

for i in range(api.count(obj)):
    api.extract(obj, i, code)
    api.decode(code, data)

    print ctypes.string_at(data.payload, data.payload_len)

api.destroy(obj)