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Another test file, more jupyter experiments

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Jamie Hardt
2018-12-31 16:43:26 -08:00
parent 0e21053d4e
commit c45b00828a
4 changed files with 59 additions and 5 deletions
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52
examples/wavinfo.ipynb
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@@ -148,6 +148,58 @@
"print(ptinfo.bext)"
]
},
{
"cell_type": "code",
"execution_count": 17,
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"'<BWFXML><IXML_VERSION>1.61</IXML_VERSION><STEINBERG><ATTR_LIST><ATTR><TYPE>string</TYPE><NAME>MediaLibrary</NAME><VALUE>The Recordist Christmas 2018</VALUE></ATTR><ATTR><TYPE>string</TYPE><NAME>MediaCategoryPost</NAME><VALUE>Bullets</VALUE></ATTR><ATTR><TYPE>string</TYPE><NAME>MediaLibraryManufacturerName</NAME><VALUE>Creative Sound Design, LLC</VALUE></ATTR><ATTR><TYPE>string</TYPE><NAME>AudioSoundEditor</NAME><VALUE>Frank Bry</VALUE></ATTR><ATTR><TYPE>string</TYPE><NAME>MediaComment</NAME><VALUE>BULLET Impact Plastic LCD TV Screen Shatter Debris 2x</VALUE></ATTR><ATTR><TYPE>string</TYPE><NAME>MusicalCategory</NAME><VALUE>Bullets</VALUE></ATTR></ATTR_LIST></STEINBERG></BWFXML>'"
]
},
"execution_count": 17,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"library_sound = testfile_path + 'BULLET Impact Plastic LCD TV Screen Shatter Debris 2x.wav'\n",
"\n",
"recinfo = wavinfo.WavInfoReader(library_sound)\n",
"\n",
"recinfo.ixml.source"
]
},
{
"cell_type": "code",
"execution_count": 18,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[ ChunkDescriptor(ident=b'fmt ', start=20, length=40),\n",
" ChunkDescriptor(ident=b'bext', start=68, length=604),\n",
" ChunkDescriptor(ident=b'data', start=680, length=2833404),\n",
" ChunkDescriptor(ident=b'ID3 ', start=2834092, length=2048),\n",
" ChunkDescriptor(ident=b'SMED', start=2836148, length=5468),\n",
" ListChunkDescriptor(signature=b'INFO', children=[ChunkDescriptor(ident=b'IPRD', start=2841636, length=30), ChunkDescriptor(ident=b'IGNR', start=2841674, length=8), ChunkDescriptor(ident=b'IART', start=2841690, length=10), ChunkDescriptor(ident=b'ICMT', start=2841708, length=54), ChunkDescriptor(ident=b'ICOP', start=2841770, length=84), ChunkDescriptor(ident=b'ISFT', start=2841862, length=12), ChunkDescriptor(ident=b'ICRD', start=2841882, length=12)]),\n",
" ChunkDescriptor(ident=b'iXML', start=2841902, length=686),\n",
" ChunkDescriptor(ident=b'umid', start=2842596, length=24),\n",
" ChunkDescriptor(ident=b'_PMX', start=2842628, length=3560)]\n"
]
}
],
"source": [
"with open(library_sound,'rb') as f:\n",
" chunk_tree = wavinfo.wave_parser.parse_chunk(f)\n",
"\n",
"pp.pprint(chunk_tree.children)"
]
},
{
"cell_type": "code",
"execution_count": null,

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tests/test_files/BULLET Impact Plastic LCD TV Screen Shatter Debris 2x.wav Normal file
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4
wavinfo/wave_parser.py
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@@ -3,9 +3,9 @@ import struct
from collections import namedtuple
ListChunkDescriptor = namedtuple('ListChunk' , 'signature children')
ListChunkDescriptor = namedtuple('ListChunkDescriptor' , 'signature children')
class ChunkDescriptor(namedtuple('Chunk', 'ident start length') ):
class ChunkDescriptor(namedtuple('ChunkDescriptor', 'ident start length') ):
def read_data(self, from_stream):
from_stream.seek(self.start)
return from_stream.read(self.length)

8
wavinfo/wave_reader.py
View File

@@ -2,7 +2,7 @@ import struct
from collections import namedtuple
from .wave_parser import parse_chunk
from .wave_parser import parse_chunk, ChunkDescriptor, ListChunkDescriptor
from .wave_ixml_reader import WavIXMLFormat
WavDataDescriptor = namedtuple('WavDataDescriptor','byte_count frame_count')
@@ -37,10 +37,12 @@ class WavInfoReader():
def _find_chunk_data(self, ident, from_stream, default_none=False):
chunk_descriptor = None
top_chunks = (chunk for chunk in self.main_list if type(chunk) is ChunkDescriptor)
if default_none:
chunk_descriptor =next((chunk for chunk in self.main_list if chunk.ident == ident),None)
chunk_descriptor = next((chunk for chunk in top_chunks if chunk.ident == ident),None)
else:
chunk_descriptor = next((chunk for chunk in self.main_list if chunk.ident == ident))
chunk_descriptor = next((chunk for chunk in top_chunks if chunk.ident == ident))
if chunk_descriptor:
return chunk_descriptor.read_data(from_stream)