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'''Wrapper for include/libswscale/swscale.h
'''
from __future__ import unicode_literals
from ctypes import (c_int, c_uint16, c_int32, c_int64, c_uint32, c_uint64, 
    c_uint8, c_uint, c_double, c_float, c_ubyte, c_size_t, c_char, c_char_p, 
    c_void_p, addressof, byref, cast, POINTER, CFUNCTYPE, Structure, Union, 
    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'
]
