Difficult-Rocket/libs/pyglet/media/codecs/ffmpeg_lib/libswscale.py

# ----------------------------------------------------------------------------
# pyglet
# Copyright (c) 2006-2008 Alex Holkner
# Copyright (c) 2008-2021 pyglet contributors
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# ----------------------------------------------------------------------------
"""Wrapper for include/libswscale/swscale.h
"""
from ctypes import POINTER, Structure
from ctypes import c_int
from ctypes import c_uint8, c_double

import pyglet.lib
from pyglet.util import debug_print
from . import compat

_debug = debug_print('debug_media')

try:
    swscale = pyglet.lib.load_library(
        'swscale',
        win32='swscale-6',
        darwin='swscale.6'
    )
    version = 6
except ImportError:
    if _debug:
        print("Failed to load: swscale-6. Trying older version.")

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

compat.set_version('swscale', version)

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'
]