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

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'
]