diff options
| author | Xusheng <xusheng@vector35.com> | 2021-07-01 12:34:30 +0800 |
|---|---|---|
| committer | Xusheng Li <xushengli@protonmail.com> | 2021-07-05 10:11:47 +0800 |
| commit | 13ff200ba134b8704f37eca99c42b70dab0d17dc (patch) | |
| tree | 876b3db3c53f704b31152aeaede1f2edc9d27b24 /python/examples/kaitai/creative_voice_file.py | |
| parent | 4039a800349dcd587833d3e27d9137e4649818f4 (diff) | |
Remove snippet and kaitai plugin. Note their individual links.
Diffstat (limited to 'python/examples/kaitai/creative_voice_file.py')
| -rw-r--r-- | python/examples/kaitai/creative_voice_file.py | 339 |
1 files changed, 0 insertions, 339 deletions
diff --git a/python/examples/kaitai/creative_voice_file.py b/python/examples/kaitai/creative_voice_file.py deleted file mode 100644 index 3ee67227..00000000 --- a/python/examples/kaitai/creative_voice_file.py +++ /dev/null @@ -1,339 +0,0 @@ -# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild - -from pkg_resources import parse_version -from .kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO -from enum import Enum -import collections - - -if parse_version(ks_version) < parse_version('0.7'): - raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version)) - -class CreativeVoiceFile(KaitaiStruct): - """Creative Voice File is a container file format for digital audio - wave data. Initial revisions were able to support only unsigned - 8-bit PCM and ADPCM data, later versions were revised to add support - for 16-bit PCM and a-law / u-law formats. - - This format was actively used in 1990s, around the advent of - Creative's sound cards (Sound Blaster family). It was a popular - choice for a digital sound container in lots of games and multimedia - software due to simplicity and availability of Creative's recording - / editing tools. - - .. seealso:: - Source - https://wiki.multimedia.cx/index.php?title=Creative_Voice - """ - - class BlockTypes(Enum): - terminator = 0 - sound_data = 1 - sound_data_cont = 2 - silence = 3 - marker = 4 - text = 5 - repeat_start = 6 - repeat_end = 7 - extra_info = 8 - sound_data_new = 9 - - class Codecs(Enum): - pcm_8bit_unsigned = 0 - adpcm_4bit = 1 - adpcm_2_6bit = 2 - adpcm_2_bit = 3 - pcm_16bit_signed = 4 - alaw = 6 - ulaw = 7 - adpcm_4_to_16bit = 512 - SEQ_FIELDS = ["magic", "header_size", "version", "checksum", "blocks"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['magic']['start'] = self._io.pos() - self.magic = self._io.ensure_fixed_contents(b"\x43\x72\x65\x61\x74\x69\x76\x65\x20\x56\x6F\x69\x63\x65\x20\x46\x69\x6C\x65\x1A") - self._debug['magic']['end'] = self._io.pos() - self._debug['header_size']['start'] = self._io.pos() - self.header_size = self._io.read_u2le() - self._debug['header_size']['end'] = self._io.pos() - self._debug['version']['start'] = self._io.pos() - self.version = self._io.read_u2le() - self._debug['version']['end'] = self._io.pos() - self._debug['checksum']['start'] = self._io.pos() - self.checksum = self._io.read_u2le() - self._debug['checksum']['end'] = self._io.pos() - self._debug['blocks']['start'] = self._io.pos() - self.blocks = [] - i = 0 - while not self._io.is_eof(): - if not 'arr' in self._debug['blocks']: - self._debug['blocks']['arr'] = [] - self._debug['blocks']['arr'].append({'start': self._io.pos()}) - _t_blocks = self._root.Block(self._io, self, self._root) - _t_blocks._read() - self.blocks.append(_t_blocks) - self._debug['blocks']['arr'][len(self.blocks) - 1]['end'] = self._io.pos() - i += 1 - - self._debug['blocks']['end'] = self._io.pos() - - class BlockMarker(KaitaiStruct): - """ - .. seealso:: - Source - https://wiki.multimedia.cx/index.php?title=Creative_Voice#Block_type_0x04:_Marker - """ - SEQ_FIELDS = ["marker_id"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['marker_id']['start'] = self._io.pos() - self.marker_id = self._io.read_u2le() - self._debug['marker_id']['end'] = self._io.pos() - - - class BlockSilence(KaitaiStruct): - """ - .. seealso:: - Source - https://wiki.multimedia.cx/index.php?title=Creative_Voice#Block_type_0x03:_Silence - """ - SEQ_FIELDS = ["duration_samples", "freq_div"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['duration_samples']['start'] = self._io.pos() - self.duration_samples = self._io.read_u2le() - self._debug['duration_samples']['end'] = self._io.pos() - self._debug['freq_div']['start'] = self._io.pos() - self.freq_div = self._io.read_u1() - self._debug['freq_div']['end'] = self._io.pos() - - @property - def sample_rate(self): - if hasattr(self, '_m_sample_rate'): - return self._m_sample_rate if hasattr(self, '_m_sample_rate') else None - - self._m_sample_rate = (1000000.0 / (256 - self.freq_div)) - return self._m_sample_rate if hasattr(self, '_m_sample_rate') else None - - @property - def duration_sec(self): - """Duration of silence, in seconds.""" - if hasattr(self, '_m_duration_sec'): - return self._m_duration_sec if hasattr(self, '_m_duration_sec') else None - - self._m_duration_sec = (self.duration_samples / self.sample_rate) - return self._m_duration_sec if hasattr(self, '_m_duration_sec') else None - - - class BlockSoundDataNew(KaitaiStruct): - """ - .. seealso:: - Source - https://wiki.multimedia.cx/index.php?title=Creative_Voice#Block_type_0x09:_Sound_data_.28New_format.29 - """ - SEQ_FIELDS = ["sample_rate", "bits_per_sample", "num_channels", "codec", "reserved", "wave"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['sample_rate']['start'] = self._io.pos() - self.sample_rate = self._io.read_u4le() - self._debug['sample_rate']['end'] = self._io.pos() - self._debug['bits_per_sample']['start'] = self._io.pos() - self.bits_per_sample = self._io.read_u1() - self._debug['bits_per_sample']['end'] = self._io.pos() - self._debug['num_channels']['start'] = self._io.pos() - self.num_channels = self._io.read_u1() - self._debug['num_channels']['end'] = self._io.pos() - self._debug['codec']['start'] = self._io.pos() - self.codec = KaitaiStream.resolve_enum(self._root.Codecs, self._io.read_u2le()) - self._debug['codec']['end'] = self._io.pos() - self._debug['reserved']['start'] = self._io.pos() - self.reserved = self._io.read_bytes(4) - self._debug['reserved']['end'] = self._io.pos() - self._debug['wave']['start'] = self._io.pos() - self.wave = self._io.read_bytes_full() - self._debug['wave']['end'] = self._io.pos() - - - class Block(KaitaiStruct): - SEQ_FIELDS = ["block_type", "body_size1", "body_size2", "body"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['block_type']['start'] = self._io.pos() - self.block_type = KaitaiStream.resolve_enum(self._root.BlockTypes, self._io.read_u1()) - self._debug['block_type']['end'] = self._io.pos() - if self.block_type != self._root.BlockTypes.terminator: - self._debug['body_size1']['start'] = self._io.pos() - self.body_size1 = self._io.read_u2le() - self._debug['body_size1']['end'] = self._io.pos() - - if self.block_type != self._root.BlockTypes.terminator: - self._debug['body_size2']['start'] = self._io.pos() - self.body_size2 = self._io.read_u1() - self._debug['body_size2']['end'] = self._io.pos() - - if self.block_type != self._root.BlockTypes.terminator: - self._debug['body']['start'] = self._io.pos() - _on = self.block_type - if _on == self._root.BlockTypes.sound_data_new: - self._raw_body = self._io.read_bytes(self.body_size) - io = KaitaiStream(BytesIO(self._raw_body)) - self.body = self._root.BlockSoundDataNew(io, self, self._root) - self.body._read() - elif _on == self._root.BlockTypes.repeat_start: - self._raw_body = self._io.read_bytes(self.body_size) - io = KaitaiStream(BytesIO(self._raw_body)) - self.body = self._root.BlockRepeatStart(io, self, self._root) - self.body._read() - elif _on == self._root.BlockTypes.marker: - self._raw_body = self._io.read_bytes(self.body_size) - io = KaitaiStream(BytesIO(self._raw_body)) - self.body = self._root.BlockMarker(io, self, self._root) - self.body._read() - elif _on == self._root.BlockTypes.sound_data: - self._raw_body = self._io.read_bytes(self.body_size) - io = KaitaiStream(BytesIO(self._raw_body)) - self.body = self._root.BlockSoundData(io, self, self._root) - self.body._read() - elif _on == self._root.BlockTypes.extra_info: - self._raw_body = self._io.read_bytes(self.body_size) - io = KaitaiStream(BytesIO(self._raw_body)) - self.body = self._root.BlockExtraInfo(io, self, self._root) - self.body._read() - elif _on == self._root.BlockTypes.silence: - self._raw_body = self._io.read_bytes(self.body_size) - io = KaitaiStream(BytesIO(self._raw_body)) - self.body = self._root.BlockSilence(io, self, self._root) - self.body._read() - else: - self.body = self._io.read_bytes(self.body_size) - self._debug['body']['end'] = self._io.pos() - - - @property - def body_size(self): - """body_size is a 24-bit little-endian integer, so we're - emulating that by adding two standard-sized integers - (body_size1 and body_size2). - """ - if hasattr(self, '_m_body_size'): - return self._m_body_size if hasattr(self, '_m_body_size') else None - - if self.block_type != self._root.BlockTypes.terminator: - self._m_body_size = (self.body_size1 + (self.body_size2 << 16)) - - return self._m_body_size if hasattr(self, '_m_body_size') else None - - - class BlockRepeatStart(KaitaiStruct): - """ - .. seealso:: - Source - https://wiki.multimedia.cx/index.php?title=Creative_Voice#Block_type_0x06:_Repeat_start - """ - SEQ_FIELDS = ["repeat_count_1"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['repeat_count_1']['start'] = self._io.pos() - self.repeat_count_1 = self._io.read_u2le() - self._debug['repeat_count_1']['end'] = self._io.pos() - - - class BlockSoundData(KaitaiStruct): - """ - .. seealso:: - Source - https://wiki.multimedia.cx/index.php?title=Creative_Voice#Block_type_0x01:_Sound_data - """ - SEQ_FIELDS = ["freq_div", "codec", "wave"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['freq_div']['start'] = self._io.pos() - self.freq_div = self._io.read_u1() - self._debug['freq_div']['end'] = self._io.pos() - self._debug['codec']['start'] = self._io.pos() - self.codec = KaitaiStream.resolve_enum(self._root.Codecs, self._io.read_u1()) - self._debug['codec']['end'] = self._io.pos() - self._debug['wave']['start'] = self._io.pos() - self.wave = self._io.read_bytes_full() - self._debug['wave']['end'] = self._io.pos() - - @property - def sample_rate(self): - if hasattr(self, '_m_sample_rate'): - return self._m_sample_rate if hasattr(self, '_m_sample_rate') else None - - self._m_sample_rate = (1000000.0 / (256 - self.freq_div)) - return self._m_sample_rate if hasattr(self, '_m_sample_rate') else None - - - class BlockExtraInfo(KaitaiStruct): - """ - .. seealso:: - Source - https://wiki.multimedia.cx/index.php?title=Creative_Voice#Block_type_0x08:_Extra_info - """ - SEQ_FIELDS = ["freq_div", "codec", "num_channels_1"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['freq_div']['start'] = self._io.pos() - self.freq_div = self._io.read_u2le() - self._debug['freq_div']['end'] = self._io.pos() - self._debug['codec']['start'] = self._io.pos() - self.codec = KaitaiStream.resolve_enum(self._root.Codecs, self._io.read_u1()) - self._debug['codec']['end'] = self._io.pos() - self._debug['num_channels_1']['start'] = self._io.pos() - self.num_channels_1 = self._io.read_u1() - self._debug['num_channels_1']['end'] = self._io.pos() - - @property - def num_channels(self): - """Number of channels (1 = mono, 2 = stereo).""" - if hasattr(self, '_m_num_channels'): - return self._m_num_channels if hasattr(self, '_m_num_channels') else None - - self._m_num_channels = (self.num_channels_1 + 1) - return self._m_num_channels if hasattr(self, '_m_num_channels') else None - - @property - def sample_rate(self): - if hasattr(self, '_m_sample_rate'): - return self._m_sample_rate if hasattr(self, '_m_sample_rate') else None - - self._m_sample_rate = (256000000.0 / (self.num_channels * (65536 - self.freq_div))) - return self._m_sample_rate if hasattr(self, '_m_sample_rate') else None - - - |
