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# pyglet
# Copyright (c) 2006-2008 Alex Holkner
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"""Wrapper for include/libswscale/swscale.h
"""
from ctypes import c_int, c_uint16, c_int32, c_int64, c_uint32, c_uint64
from ctypes import c_uint8, c_uint, c_double, c_float, c_ubyte, c_size_t, c_char, c_char_p
from ctypes import c_void_p, addressof, byref, cast, POINTER, CFUNCTYPE, Structure, Union
from ctypes import create_string_buffer, memmove

import pyglet
import pyglet.lib

swscale = pyglet.lib.load_library(
    'swscale',
    win32='swscale-5',
    darwin='swscale.5'
)

SWS_FAST_BILINEAR = 1


class SwsContext(Structure):
    pass


class SwsFilter(Structure):
    pass


swscale.sws_getCachedContext.restype = POINTER(SwsContext)
swscale.sws_getCachedContext.argtypes = [POINTER(SwsContext),
                                         c_int, c_int, c_int, c_int,
                                         c_int, c_int, c_int,
                                         POINTER(SwsFilter), POINTER(SwsFilter),
                                         POINTER(c_double)]
swscale.sws_freeContext.argtypes = [POINTER(SwsContext)]
swscale.sws_scale.restype = c_int
swscale.sws_scale.argtypes = [POINTER(SwsContext),
                              POINTER(POINTER(c_uint8)),
                              POINTER(c_int),
                              c_int, c_int,
                              POINTER(POINTER(c_uint8)),
                              POINTER(c_int)]

__all__ = [
    'swscale',
    'SWS_FAST_BILINEAR',
    'SwsContext',
    'SwsFilter'
]
