jaseg/infiray_irg_py
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Add P200 model support

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jaseg 2024-10-21 16:47:21 +02:00
parent a843e706c5
commit 33d475a1eb
2 changed files with 36 additions and 11 deletions
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2
example.py
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@ -3,7 +3,7 @@ from pathlib import Path
import infiray_irg
coarse, fine, vis = infiray_irg.load(Path('example-2.irg').read_bytes())
coarse, fine, vis = infiray_irg.load(Path('example.irg').read_bytes())
fig, ((ax1, ax2), (ax3, ax4)) = plt.subplots(2, 2, figsize=(15, 18))

45
src/infiray_irg.py
View file

@ -10,13 +10,17 @@ def load(data):
if len(out) < n:
raise ValueError(f'File is truncated, tried to read {n} bytes, but only {len(out)} bytes remain.')
return out
header = consume(128)
if header[:2] not in [
bytes([0xca, 0xac]),
bytes([0xba, 0xab])
] or header[-2:] != bytes([0xac, 0xca]):
raise ValueError('Header magic not found.')
for model, match in {
'c201': bytes([0xca, 0xac]),
'other': bytes([0xba, 0xab]),
'p200': bytes([0x04, 0xa0]),
}.items():
if (header[:2] + header[-2:]).startswith(match):
break
else:
raise ValueError(f'Header magic not found. Got header: {header[0]:02x} {header[1]:02x}')
_unk0, coarse_section_length, y_res, x_res,\
_zero0, _unk1, _zero1, fine_offset, _unk2, jpeg_length,\
@ -24,26 +28,47 @@ def load(data):
_zero_celsius0, _zero_celsius1, *rest, high_gain_mode_flag = struct.unpack('<11I', header[34:78])
if (x_res, y_res) != (x_res_2, y_res_2):
import textwrap
print(textwrap.dedent(f'''
{_unk0=}, {coarse_section_length=}, {y_res=}, {x_res=},
{_zero0=}, {_unk1=}, {_zero1=}, {fine_offset=}, {_unk2=}, {jpeg_length=},
{y_res_2=}, {x_res_2=}, {_unk3=}
{_zero_celsius0=} {_zero_celsius1=} {rest=}, {high_gain_mode_flag=}'''))
if (x_res, y_res) != (x_res_2, y_res_2) and model != 'p200':
raise ValueError(f'Resolution mismatch in header: {x_res}*{y_res} != {x_res_2}*{y_res_2}')
if x_res*y_res != coarse_section_length:
raise ValueError('Resolution mismatch in header')
coarse_img = np.frombuffer(consume(coarse_section_length), dtype=np.uint8).reshape((y_res, x_res))
if header[:2] == bytes([0xca, 0xac]):
if model == 'c201':
if header[-2:] != bytes([0xac,0xca]):
raise ValueError(f'Header end marker not found. Got header: {header[-2]:02x} {header[-1]:02x}')
coarse_img = np.frombuffer(consume(coarse_section_length), dtype=np.uint8).reshape((y_res, x_res))
# 1/16th Kelvin steps
fine_img = np.frombuffer(consume(x_res*y_res*2), dtype=np.uint16).reshape((y_res, x_res))
fine_img = (fine_img / 16) - 273
vis_jpg = Image.open(io.BytesIO(consume(jpeg_length)))
else: # 0xbaac variant
elif model == 'other':
if header[-2:] != bytes([0xab,0xba]):
raise ValueError(f'Header end marker not found. Got header: {header[-2]:02x} {header[-1]:02x}')
coarse_img = np.frombuffer(consume(coarse_section_length), dtype=np.uint8).reshape((y_res, x_res))
# 0.1 Kelvin steps
fine_img = np.frombuffer(consume(x_res*y_res*2), dtype=np.uint16).reshape((y_res, x_res))
fine_img = fine_img / 10 - 273
vis_jpg = Image.open(io.BytesIO(data))
else:
header += consume(128)
coarse_img = np.frombuffer(consume(coarse_section_length), dtype=np.uint8).reshape((y_res, x_res))
fine_img = np.frombuffer(consume(x_res*y_res*2), dtype=np.uint16).reshape((y_res, x_res))
fine_img = fine_img / 10 - 273
# In my example file, data now contains the JSON '{"roi":[]}' and no JPG. We ignore that.
vis_jpg = None
return coarse_img, fine_img, vis_jpg