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bext Version handling

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Jamie Hardt
2019-01-01 20:51:54 -08:00
parent ae09897abf
commit 41b599923a
3 changed files with 83 additions and 69 deletions
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107
examples/wavinfo.ipynb
View File

@@ -2,7 +2,7 @@
"cells": [
{
"cell_type": "code",
"execution_count": 4,
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": [
@@ -12,7 +12,7 @@
},
{
"cell_type": "code",
"execution_count": 5,
"execution_count": 2,
"metadata": {},
"outputs": [],
"source": [
@@ -21,18 +21,18 @@
},
{
"cell_type": "code",
"execution_count": 6,
"execution_count": 3,
"metadata": {},
"outputs": [],
"source": [
"metacorder_path = '../tests/test_files/metacorder/Sr001-001-06_01.WAV'\n",
"path = '../tests/test_files/protools/PT A101_4.A1.wav'\n",
"\n",
"info = wavinfo.WavInfoReader(metacorder_path)"
"info = wavinfo.WavInfoReader(path)"
]
},
{
"cell_type": "code",
"execution_count": 7,
"execution_count": 4,
"metadata": {
"scrolled": true
},
@@ -42,17 +42,19 @@
"output_type": "stream",
"text": [
"[ ChunkDescriptor(ident=b'bext', start=20, length=858),\n",
" ChunkDescriptor(ident=b'fmt ', start=886, length=16),\n",
" ChunkDescriptor(ident=b'data', start=910, length=1725696),\n",
" ChunkDescriptor(ident=b'iXML', start=1726614, length=2852),\n",
" ChunkDescriptor(ident=b'iXTC', start=1729474, length=20)]\n"
" ChunkDescriptor(ident=b'iXML', start=886, length=5226),\n",
" ChunkDescriptor(ident=b'fmt ', start=6120, length=16),\n",
" ChunkDescriptor(ident=b'data', start=6144, length=864840),\n",
" ChunkDescriptor(ident=b'umid', start=870992, length=24),\n",
" ChunkDescriptor(ident=b'minf', start=871024, length=16),\n",
" ChunkDescriptor(ident=b'regn', start=871048, length=92)]\n"
]
}
],
"source": [
"import wavinfo.wave_parser\n",
"\n",
"with open(metacorder_path,'rb') as f:\n",
"with open(path,'rb') as f:\n",
" chunk_tree = wavinfo.wave_parser.parse_chunk(f)\n",
"\n",
"pp.pprint(chunk_tree.children)"
@@ -60,69 +62,68 @@
},
{
"cell_type": "code",
"execution_count": 12,
"execution_count": 5,
"metadata": {},
"outputs": [],
"source": [
"# with open(metacorder_path,'rb') as f:\n",
"# f.seek(chunk_tree.children[4].start)\n",
"# iXTC_data = f.read(chunk_tree.children[4].length)\n",
" \n",
"# print(iXTC_data)"
]
},
{
"cell_type": "code",
"execution_count": 13,
"metadata": {
"scrolled": true
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"WavBextFormat(description='gSCENE=001\\r\\ngTAKE=06\\r\\ngTAPE=Sr001\\r\\ngUBITS=00000000\\r\\n', originator='Metacorder Demo', originator_ref='', originator_date='2019:01:01', originator_time='13:36:16', time_reference=2350375830, version=0, umid=b'\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00', loudness_value=0.0, loudness_range=0.0, max_true_peak=0.0, max_momentary_loudness=0.0, max_shortterm_loudness=0.0, coding_history='')\n"
"b'\\x00\\x00\\x00\\x00\\x00\\x00\\x00*\\xfd\\xf5\\x0c$\\xe4s\\x80\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00'\n",
"000000000000002afdf50c24e47380000000000000000000\n",
"24\n"
]
}
],
"source": [
"with open(metacorder_path,'rb') as f:\n",
" f.seek(chunk_tree.children[0].start)\n",
" bext_raw = f.read(chunk_tree.children[0].length)\n",
"\n",
"# ptinfo = wavinfo.WavInfoReader(metacorder_path)\n",
"\n",
"print(wavinfo.WavInfoReader(metacorder_path).bext)"
"with open(path,'rb') as f:\n",
" f.seek( chunk_tree.children[4].start )\n",
" umid_bin = f.read(chunk_tree.children[4].length)\n",
" f.seek( chunk_tree.children[6].start )\n",
" regn_bin = f.read(chunk_tree.children[6].length)\n",
" \n",
"print(umid_bin)\n",
"print(umid_bin.hex())\n",
"print(len(umid_bin))"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"scrolled": false
},
"outputs": [],
"execution_count": 6,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"WavBextFormat(description='dUBITS=12311804\\r\\ndSCENE=A101\\r\\ndTAKE=4\\r\\ndTAPE=18Y12M31\\r\\ndFRAMERATE=23.976ND\\r\\ndSPEED=023.976-NDF\\r\\ndTRK1=MKH516 A\\r\\ndTRK2=Boom\\r\\n', originator='Sound Dev: 702T S#GR1112089007', originator_ref='aa4CKtcd13Vk', originator_date='2018-12-31', originator_time='12:40:07', time_reference=2191709524, version=0, umid=None, loudness_value=0.0, loudness_range=0.0, max_true_peak=0.0, max_momentary_loudness=0.0, max_shortterm_loudness=0.0, coding_history='A=PCM,F=48000,W=24,M=stereo,R=48000,T=2 Ch\\r\\n')\n"
]
}
],
"source": [
"library_sound = testfile_path + 'BULLET Impact Plastic LCD TV Screen Shatter Debris 2x.wav'\n",
"\n",
"recinfo = wavinfo.WavInfoReader(library_sound)\n",
"\n",
"recinfo.ixml.source"
"print(info.bext)"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"scrolled": true
},
"outputs": [],
"execution_count": 8,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"b'\\x01\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00*\\xfd\\xf5\\x0c$\\xe4s\\x80\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x0c3\\x02\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x00T\\xd5\\xa2\\x82\\x00\\x00\\x00\\x00\\x10PT A101_4.A1.wavGK\\xaa\\xaf\\x7f\\x00\\x00@ }\\x06\\x00`\\x00\\x00'\n",
"01000000000000000000002afdf50c24e473800000000000000000000c330200000000000000000000000000000000000000000054d5a2820000000010505420413130315f342e41312e776176474baaaf7f000040207d0600600000\n",
"92\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)"
"print(regn_bin)\n",
"print(regn_bin.hex())\n",
"print(len(regn_bin))"
]
},
{

9
tests/test_wave_parsing.py
View File

@@ -71,7 +71,7 @@ class TestWaveInfo(TestCase):
if 'originator_reference' in ffprobe_info['format']['tags']:
self.assertEqual( info.bext.originator_ref, ffprobe_info['format']['tags']['originator_reference'] )
else:
self.assertEqual( info.bext.originator_ref, None)
self.assertEqual( info.bext.originator_ref, '')
# these don't always reflect the bext info
#self.assertEqual( info.bext.originator_date, ffprobe_info['format']['tags']['date'] )
@@ -79,12 +79,9 @@ class TestWaveInfo(TestCase):
self.assertEqual( info.bext.time_reference, int(ffprobe_info['format']['tags']['time_reference']) )
if 'coding_history' in ffprobe_info['format']['tags']:
if len(ffprobe_info['format']['tags']['coding_history']) > 0:
self.assertEqual( info.bext.coding_history, ffprobe_info['format']['tags']['coding_history'] )
else:
self.assertEqual( info.bext.coding_history, None )
self.assertEqual( info.bext.coding_history, ffprobe_info['format']['tags']['coding_history'] )
else:
self.assertEqual( info.bext.coding_history, None )
self.assertEqual( info.bext.coding_history, '' )
def test_ixml(self):
expected = {'A101_4.WAV': {'project' : 'BMH', 'scene': 'A101', 'take': '4',

36
wavinfo/wave_reader.py
View File

@@ -125,10 +125,26 @@ class WavInfoReader():
trimmed = bytes
decoded = trimmed.decode(encoding)
if len(decoded) > 0:
return decoded
else:
return None
return decoded
bext_version = unpacked[6]
if bext_version > 0:
umid = unpacked[6]
else:
umid = None
if bext_version > 1:
loudness_value = unpacked[8] / 100.0,
loudness_range = unpacked[9] / 100.0
max_true_peak = unpacked[10] / 100.0
max_momentary_loudness = unpacked[11] / 100.0
max_shortterm_loudness = unpacked[12] / 100.0
else:
loudness_value = None
loudness_range = None
max_true_peak = None
max_momentary_loudness = None
max_shortterm_loudness = None
return WavBextFormat(description=sanatize_bytes(unpacked[0]),
originator = sanatize_bytes(unpacked[1]),
@@ -137,12 +153,12 @@ class WavInfoReader():
originator_time = sanatize_bytes(unpacked[4]),
time_reference = unpacked[5],
version = unpacked[6],
umid = unpacked[7],
loudness_value = unpacked[8] / 100.0,
loudness_range = unpacked[9] / 100.0,
max_true_peak = unpacked[10] / 100.0,
max_momentary_loudness = unpacked[11] / 100.0,
max_shortterm_loudness = unpacked[12] / 100.0,
umid = umid,
loudness_value = loudness_value,
loudness_range = loudness_range,
max_true_peak = max_true_peak,
max_momentary_loudness = max_momentary_loudness,
max_shortterm_loudness = max_shortterm_loudness,
coding_history = sanatize_bytes(bext_data[rest_starts:])
)