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# Copyright (c) 2006-2008 Alex Holkner
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'''Wrapper for include/libswresample/swresample.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

swresample = pyglet.lib.load_library(
    'swresample',
    win32='swresample-3',
    darwin='swresample.3'
)

SWR_CH_MAX = 32

class SwrContext(Structure): pass

swresample.swr_alloc_set_opts.restype = POINTER(SwrContext)
swresample.swr_alloc_set_opts.argtypes = [POINTER(SwrContext),
        c_int64, c_int, c_int, c_int64,
        c_int, c_int, c_int, c_void_p]
swresample.swr_init.restype = c_int
swresample.swr_init.argtypes = [POINTER(SwrContext)]
swresample.swr_free.argtypes = [POINTER(POINTER(SwrContext))]
swresample.swr_convert.restype = c_int
swresample.swr_convert.argtypes = [POINTER(SwrContext),
        POINTER(c_uint8) * SWR_CH_MAX,
        c_int,
        POINTER(POINTER(c_uint8)),
        c_int]
swresample.swr_set_compensation.restype = c_int
swresample.swr_set_compensation.argtypes = [POINTER(SwrContext),
                                            c_int, c_int]
swresample.swr_get_out_samples.restype = c_int
swresample.swr_get_out_samples.argtypes = [POINTER(SwrContext), c_int]  

__all__ = [
'swresample',
'SWR_CH_MAX',
'SwrContext'
]
