This file is indexed.

/usr/lib/python2.7/dist-packages/stereo_msgs/msg/_DisparityImage.py is in python-stereo-msgs 1.12.5-2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
# This Python file uses the following encoding: utf-8
"""autogenerated by genpy from stereo_msgs/DisparityImage.msg. Do not edit."""
import sys
python3 = True if sys.hexversion > 0x03000000 else False
import genpy
import struct

import sensor_msgs.msg
import std_msgs.msg

class DisparityImage(genpy.Message):
  _md5sum = "04a177815f75271039fa21f16acad8c9"
  _type = "stereo_msgs/DisparityImage"
  _has_header = True #flag to mark the presence of a Header object
  _full_text = """# Separate header for compatibility with current TimeSynchronizer.
# Likely to be removed in a later release, use image.header instead.
Header header

# Floating point disparity image. The disparities are pre-adjusted for any
# x-offset between the principal points of the two cameras (in the case
# that they are verged). That is: d = x_l - x_r - (cx_l - cx_r)
sensor_msgs/Image image

# Stereo geometry. For disparity d, the depth from the camera is Z = fT/d.
float32 f # Focal length, pixels
float32 T # Baseline, world units

# Subwindow of (potentially) valid disparity values.
sensor_msgs/RegionOfInterest valid_window

# The range of disparities searched.
# In the disparity image, any disparity less than min_disparity is invalid.
# The disparity search range defines the horopter, or 3D volume that the
# stereo algorithm can "see". Points with Z outside of:
#     Z_min = fT / max_disparity
#     Z_max = fT / min_disparity
# could not be found.
float32 min_disparity
float32 max_disparity

# Smallest allowed disparity increment. The smallest achievable depth range
# resolution is delta_Z = (Z^2/fT)*delta_d.
float32 delta_d

================================================================================
MSG: std_msgs/Header
# Standard metadata for higher-level stamped data types.
# This is generally used to communicate timestamped data 
# in a particular coordinate frame.
# 
# sequence ID: consecutively increasing ID 
uint32 seq
#Two-integer timestamp that is expressed as:
# * stamp.sec: seconds (stamp_secs) since epoch (in Python the variable is called 'secs')
# * stamp.nsec: nanoseconds since stamp_secs (in Python the variable is called 'nsecs')
# time-handling sugar is provided by the client library
time stamp
#Frame this data is associated with
# 0: no frame
# 1: global frame
string frame_id

================================================================================
MSG: sensor_msgs/Image
# This message contains an uncompressed image
# (0, 0) is at top-left corner of image
#

Header header        # Header timestamp should be acquisition time of image
                     # Header frame_id should be optical frame of camera
                     # origin of frame should be optical center of cameara
                     # +x should point to the right in the image
                     # +y should point down in the image
                     # +z should point into to plane of the image
                     # If the frame_id here and the frame_id of the CameraInfo
                     # message associated with the image conflict
                     # the behavior is undefined

uint32 height         # image height, that is, number of rows
uint32 width          # image width, that is, number of columns

# The legal values for encoding are in file src/image_encodings.cpp
# If you want to standardize a new string format, join
# ros-users@lists.sourceforge.net and send an email proposing a new encoding.

string encoding       # Encoding of pixels -- channel meaning, ordering, size
                      # taken from the list of strings in include/sensor_msgs/image_encodings.h

uint8 is_bigendian    # is this data bigendian?
uint32 step           # Full row length in bytes
uint8[] data          # actual matrix data, size is (step * rows)

================================================================================
MSG: sensor_msgs/RegionOfInterest
# This message is used to specify a region of interest within an image.
#
# When used to specify the ROI setting of the camera when the image was
# taken, the height and width fields should either match the height and
# width fields for the associated image; or height = width = 0
# indicates that the full resolution image was captured.

uint32 x_offset  # Leftmost pixel of the ROI
                 # (0 if the ROI includes the left edge of the image)
uint32 y_offset  # Topmost pixel of the ROI
                 # (0 if the ROI includes the top edge of the image)
uint32 height    # Height of ROI
uint32 width     # Width of ROI

# True if a distinct rectified ROI should be calculated from the "raw"
# ROI in this message. Typically this should be False if the full image
# is captured (ROI not used), and True if a subwindow is captured (ROI
# used).
bool do_rectify
"""
  __slots__ = ['header','image','f','T','valid_window','min_disparity','max_disparity','delta_d']
  _slot_types = ['std_msgs/Header','sensor_msgs/Image','float32','float32','sensor_msgs/RegionOfInterest','float32','float32','float32']

  def __init__(self, *args, **kwds):
    """
    Constructor. Any message fields that are implicitly/explicitly
    set to None will be assigned a default value. The recommend
    use is keyword arguments as this is more robust to future message
    changes.  You cannot mix in-order arguments and keyword arguments.

    The available fields are:
       header,image,f,T,valid_window,min_disparity,max_disparity,delta_d

    :param args: complete set of field values, in .msg order
    :param kwds: use keyword arguments corresponding to message field names
    to set specific fields.
    """
    if args or kwds:
      super(DisparityImage, self).__init__(*args, **kwds)
      #message fields cannot be None, assign default values for those that are
      if self.header is None:
        self.header = std_msgs.msg.Header()
      if self.image is None:
        self.image = sensor_msgs.msg.Image()
      if self.f is None:
        self.f = 0.
      if self.T is None:
        self.T = 0.
      if self.valid_window is None:
        self.valid_window = sensor_msgs.msg.RegionOfInterest()
      if self.min_disparity is None:
        self.min_disparity = 0.
      if self.max_disparity is None:
        self.max_disparity = 0.
      if self.delta_d is None:
        self.delta_d = 0.
    else:
      self.header = std_msgs.msg.Header()
      self.image = sensor_msgs.msg.Image()
      self.f = 0.
      self.T = 0.
      self.valid_window = sensor_msgs.msg.RegionOfInterest()
      self.min_disparity = 0.
      self.max_disparity = 0.
      self.delta_d = 0.

  def _get_types(self):
    """
    internal API method
    """
    return self._slot_types

  def serialize(self, buff):
    """
    serialize message into buffer
    :param buff: buffer, ``StringIO``
    """
    try:
      _x = self
      buff.write(_get_struct_3I().pack(_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs))
      _x = self.header.frame_id
      length = len(_x)
      if python3 or type(_x) == unicode:
        _x = _x.encode('utf-8')
        length = len(_x)
      buff.write(struct.pack('<I%ss'%length, length, _x))
      _x = self
      buff.write(_get_struct_3I().pack(_x.image.header.seq, _x.image.header.stamp.secs, _x.image.header.stamp.nsecs))
      _x = self.image.header.frame_id
      length = len(_x)
      if python3 or type(_x) == unicode:
        _x = _x.encode('utf-8')
        length = len(_x)
      buff.write(struct.pack('<I%ss'%length, length, _x))
      _x = self
      buff.write(_get_struct_2I().pack(_x.image.height, _x.image.width))
      _x = self.image.encoding
      length = len(_x)
      if python3 or type(_x) == unicode:
        _x = _x.encode('utf-8')
        length = len(_x)
      buff.write(struct.pack('<I%ss'%length, length, _x))
      _x = self
      buff.write(_get_struct_BI().pack(_x.image.is_bigendian, _x.image.step))
      _x = self.image.data
      length = len(_x)
      # - if encoded as a list instead, serialize as bytes instead of string
      if type(_x) in [list, tuple]:
        buff.write(struct.pack('<I%sB'%length, length, *_x))
      else:
        buff.write(struct.pack('<I%ss'%length, length, _x))
      _x = self
      buff.write(_get_struct_2f4IB3f().pack(_x.f, _x.T, _x.valid_window.x_offset, _x.valid_window.y_offset, _x.valid_window.height, _x.valid_window.width, _x.valid_window.do_rectify, _x.min_disparity, _x.max_disparity, _x.delta_d))
    except struct.error as se: self._check_types(struct.error("%s: '%s' when writing '%s'" % (type(se), str(se), str(locals().get('_x', self)))))
    except TypeError as te: self._check_types(ValueError("%s: '%s' when writing '%s'" % (type(te), str(te), str(locals().get('_x', self)))))

  def deserialize(self, str):
    """
    unpack serialized message in str into this message instance
    :param str: byte array of serialized message, ``str``
    """
    try:
      if self.header is None:
        self.header = std_msgs.msg.Header()
      if self.image is None:
        self.image = sensor_msgs.msg.Image()
      if self.valid_window is None:
        self.valid_window = sensor_msgs.msg.RegionOfInterest()
      end = 0
      _x = self
      start = end
      end += 12
      (_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs,) = _get_struct_3I().unpack(str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      start = end
      end += length
      if python3:
        self.header.frame_id = str[start:end].decode('utf-8')
      else:
        self.header.frame_id = str[start:end]
      _x = self
      start = end
      end += 12
      (_x.image.header.seq, _x.image.header.stamp.secs, _x.image.header.stamp.nsecs,) = _get_struct_3I().unpack(str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      start = end
      end += length
      if python3:
        self.image.header.frame_id = str[start:end].decode('utf-8')
      else:
        self.image.header.frame_id = str[start:end]
      _x = self
      start = end
      end += 8
      (_x.image.height, _x.image.width,) = _get_struct_2I().unpack(str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      start = end
      end += length
      if python3:
        self.image.encoding = str[start:end].decode('utf-8')
      else:
        self.image.encoding = str[start:end]
      _x = self
      start = end
      end += 5
      (_x.image.is_bigendian, _x.image.step,) = _get_struct_BI().unpack(str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      start = end
      end += length
      self.image.data = str[start:end]
      _x = self
      start = end
      end += 37
      (_x.f, _x.T, _x.valid_window.x_offset, _x.valid_window.y_offset, _x.valid_window.height, _x.valid_window.width, _x.valid_window.do_rectify, _x.min_disparity, _x.max_disparity, _x.delta_d,) = _get_struct_2f4IB3f().unpack(str[start:end])
      self.valid_window.do_rectify = bool(self.valid_window.do_rectify)
      return self
    except struct.error as e:
      raise genpy.DeserializationError(e) #most likely buffer underfill


  def serialize_numpy(self, buff, numpy):
    """
    serialize message with numpy array types into buffer
    :param buff: buffer, ``StringIO``
    :param numpy: numpy python module
    """
    try:
      _x = self
      buff.write(_get_struct_3I().pack(_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs))
      _x = self.header.frame_id
      length = len(_x)
      if python3 or type(_x) == unicode:
        _x = _x.encode('utf-8')
        length = len(_x)
      buff.write(struct.pack('<I%ss'%length, length, _x))
      _x = self
      buff.write(_get_struct_3I().pack(_x.image.header.seq, _x.image.header.stamp.secs, _x.image.header.stamp.nsecs))
      _x = self.image.header.frame_id
      length = len(_x)
      if python3 or type(_x) == unicode:
        _x = _x.encode('utf-8')
        length = len(_x)
      buff.write(struct.pack('<I%ss'%length, length, _x))
      _x = self
      buff.write(_get_struct_2I().pack(_x.image.height, _x.image.width))
      _x = self.image.encoding
      length = len(_x)
      if python3 or type(_x) == unicode:
        _x = _x.encode('utf-8')
        length = len(_x)
      buff.write(struct.pack('<I%ss'%length, length, _x))
      _x = self
      buff.write(_get_struct_BI().pack(_x.image.is_bigendian, _x.image.step))
      _x = self.image.data
      length = len(_x)
      # - if encoded as a list instead, serialize as bytes instead of string
      if type(_x) in [list, tuple]:
        buff.write(struct.pack('<I%sB'%length, length, *_x))
      else:
        buff.write(struct.pack('<I%ss'%length, length, _x))
      _x = self
      buff.write(_get_struct_2f4IB3f().pack(_x.f, _x.T, _x.valid_window.x_offset, _x.valid_window.y_offset, _x.valid_window.height, _x.valid_window.width, _x.valid_window.do_rectify, _x.min_disparity, _x.max_disparity, _x.delta_d))
    except struct.error as se: self._check_types(struct.error("%s: '%s' when writing '%s'" % (type(se), str(se), str(locals().get('_x', self)))))
    except TypeError as te: self._check_types(ValueError("%s: '%s' when writing '%s'" % (type(te), str(te), str(locals().get('_x', self)))))

  def deserialize_numpy(self, str, numpy):
    """
    unpack serialized message in str into this message instance using numpy for array types
    :param str: byte array of serialized message, ``str``
    :param numpy: numpy python module
    """
    try:
      if self.header is None:
        self.header = std_msgs.msg.Header()
      if self.image is None:
        self.image = sensor_msgs.msg.Image()
      if self.valid_window is None:
        self.valid_window = sensor_msgs.msg.RegionOfInterest()
      end = 0
      _x = self
      start = end
      end += 12
      (_x.header.seq, _x.header.stamp.secs, _x.header.stamp.nsecs,) = _get_struct_3I().unpack(str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      start = end
      end += length
      if python3:
        self.header.frame_id = str[start:end].decode('utf-8')
      else:
        self.header.frame_id = str[start:end]
      _x = self
      start = end
      end += 12
      (_x.image.header.seq, _x.image.header.stamp.secs, _x.image.header.stamp.nsecs,) = _get_struct_3I().unpack(str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      start = end
      end += length
      if python3:
        self.image.header.frame_id = str[start:end].decode('utf-8')
      else:
        self.image.header.frame_id = str[start:end]
      _x = self
      start = end
      end += 8
      (_x.image.height, _x.image.width,) = _get_struct_2I().unpack(str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      start = end
      end += length
      if python3:
        self.image.encoding = str[start:end].decode('utf-8')
      else:
        self.image.encoding = str[start:end]
      _x = self
      start = end
      end += 5
      (_x.image.is_bigendian, _x.image.step,) = _get_struct_BI().unpack(str[start:end])
      start = end
      end += 4
      (length,) = _struct_I.unpack(str[start:end])
      start = end
      end += length
      self.image.data = str[start:end]
      _x = self
      start = end
      end += 37
      (_x.f, _x.T, _x.valid_window.x_offset, _x.valid_window.y_offset, _x.valid_window.height, _x.valid_window.width, _x.valid_window.do_rectify, _x.min_disparity, _x.max_disparity, _x.delta_d,) = _get_struct_2f4IB3f().unpack(str[start:end])
      self.valid_window.do_rectify = bool(self.valid_window.do_rectify)
      return self
    except struct.error as e:
      raise genpy.DeserializationError(e) #most likely buffer underfill

_struct_I = genpy.struct_I
def _get_struct_I():
    global _struct_I
    return _struct_I
_struct_2f4IB3f = None
def _get_struct_2f4IB3f():
    global _struct_2f4IB3f
    if _struct_2f4IB3f is None:
        _struct_2f4IB3f = struct.Struct("<2f4IB3f")
    return _struct_2f4IB3f
_struct_3I = None
def _get_struct_3I():
    global _struct_3I
    if _struct_3I is None:
        _struct_3I = struct.Struct("<3I")
    return _struct_3I
_struct_2I = None
def _get_struct_2I():
    global _struct_2I
    if _struct_2I is None:
        _struct_2I = struct.Struct("<2I")
    return _struct_2I
_struct_BI = None
def _get_struct_BI():
    global _struct_BI
    if _struct_BI is None:
        _struct_BI = struct.Struct("<BI")
    return _struct_BI