107 lines
4.1 KiB
Python
107 lines
4.1 KiB
Python
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# ----------------------------------------------------------------------------
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# pyglet
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# Copyright (c) 2006-2008 Alex Holkner
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# Copyright (c) 2008-2021 pyglet contributors
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of pyglet nor the names of its
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# contributors may be used to endorse or promote products
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# derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# ----------------------------------------------------------------------------
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from collections import namedtuple
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from pyglet.util import debug_print
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_debug = debug_print('debug_media')
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CustomField = namedtuple("CustomField", "fields removals")
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# Versions of the loaded libraries
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versions = {
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'avcodec': 0,
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'avformat': 0,
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'avutil': 0,
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'swresample': 0,
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'swscale': 0,
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}
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# Group codecs by version they are usually packaged with.
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release_versions = [
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{'avcodec': 58, 'avformat': 58, 'avutil': 56, 'swresample': 3, 'swscale': 5},
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{'libavcodec': 59, 'avformat': 59, 'avutil': 57, 'swresample': 4, 'swscale': 6}
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]
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# Removals done per library and version.
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_version_changes = {
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'avcodec': {},
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'avformat': {},
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'avutil': {},
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'swresample':{},
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'swscale': {}
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}
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def set_version(library, version):
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versions[library] = version
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def add_version_changes(library, version, structure, fields, removals):
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if version not in _version_changes[library]:
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_version_changes[library][version] = {}
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if structure in _version_changes[library][version]:
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raise Exception("Structure: {} from: {} has already been added for version {}.".format(structure,
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library,
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version)
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)
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_version_changes[library][version][structure] = CustomField(fields, removals)
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def apply_version_changes():
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"""Apply version changes to Structures in FFmpeg libraries.
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Field data can vary from version to version, however assigning _fields_ automatically assigns memory.
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_fields_ can also not be re-assigned. Use a temporary list that can be manipulated before setting the
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_fields_ of the Structure."""
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if _debug:
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print("FFmpeg Loaded Versions:", versions)
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for library, data in _version_changes.items():
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for version in data:
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for structure, cf_data in _version_changes[library][version].items():
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if versions[library] == version:
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if cf_data.removals:
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for remove_field in cf_data.removals:
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for field in list(cf_data.fields):
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if field[0] == remove_field:
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cf_data.fields.remove(field)
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structure._fields_ = cf_data.fields
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