97 lines
2.5 KiB
Python
97 lines
2.5 KiB
Python
from pyglet.util import CodecRegistry, Decoder, Encoder
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from .base import *
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import pyglet
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_debug = pyglet.options['debug_media']
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registry = CodecRegistry()
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add_decoders = registry.add_decoders
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add_encoders = registry.add_encoders
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get_decoders = registry.get_decoders
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get_encoders = registry.get_encoders
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class MediaDecoder(Decoder):
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def decode(self, filename, file, streaming):
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"""Read the given file object and return an instance of `Source`
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or `StreamingSource`.
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Throws DecodeException if there is an error. `filename`
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can be a file type hint.
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"""
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raise NotImplementedError()
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class MediaEncoder(Encoder):
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def encode(self, source, filename, file):
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"""Encode the given source to the given file. `filename`
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provides a hint to the file format desired. options are
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encoder-specific, and unknown options should be ignored or
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issue warnings.
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"""
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raise NotImplementedError()
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def add_default_codecs():
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# Add all bundled codecs. These should be listed in order of
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# preference. This is called automatically by pyglet.media.
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try:
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from . import wave
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registry.add_decoders(wave)
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registry.add_encoders(wave)
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except ImportError:
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pass
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if pyglet.compat_platform.startswith('linux'):
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try:
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from . import gstreamer
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registry.add_decoders(gstreamer)
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except ImportError:
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pass
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try:
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if pyglet.compat_platform in ('win32', 'cygwin'):
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from pyglet.libs.win32.constants import WINDOWS_VISTA_OR_GREATER
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if WINDOWS_VISTA_OR_GREATER: # Supports Vista and above.
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from . import wmf
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registry.add_decoders(wmf)
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except ImportError:
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pass
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try:
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if have_ffmpeg():
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from . import ffmpeg
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registry.add_decoders(ffmpeg)
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except ImportError:
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pass
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try:
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from . import pyogg
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registry.add_decoders(pyogg)
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except ImportError:
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pass
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def have_ffmpeg():
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"""Check if FFmpeg library is available.
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Returns:
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bool: True if FFmpeg is found.
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.. versionadded:: 1.4
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"""
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try:
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from . import ffmpeg_lib
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if _debug:
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print('FFmpeg available, using to load media files. Versions: {}'.format(ffmpeg_lib.compat.versions))
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return True
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except (ImportError, FileNotFoundError, AttributeError):
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if _debug:
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print('FFmpeg not available.')
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return False
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