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-rw-r--r--src/gr-fadingui/grc/fadingui_datasource.block.yml28
-rw-r--r--src/gr-fadingui/grc/fadingui_deframer.block.yml1
-rw-r--r--src/gr-fadingui/grc/fadingui_frame_obj.block.yml25
-rw-r--r--src/gr-fadingui/grc/fadingui_xor_frame_sync.block.yml8
-rw-r--r--src/gr-fadingui/python/CMakeLists.txt1
-rw-r--r--src/gr-fadingui/python/datasource.py105
-rw-r--r--src/gr-fadingui/python/deframer.py4
-rw-r--r--src/gr-fadingui/python/frame_obj.py77
-rw-r--r--src/gr-fadingui/python/logger.py14
-rw-r--r--src/gr-fadingui/python/xor_frame_sync.py14
10 files changed, 140 insertions, 137 deletions
diff --git a/src/gr-fadingui/grc/fadingui_datasource.block.yml b/src/gr-fadingui/grc/fadingui_datasource.block.yml
index 5f34591..6c31995 100644
--- a/src/gr-fadingui/grc/fadingui_datasource.block.yml
+++ b/src/gr-fadingui/grc/fadingui_datasource.block.yml
@@ -1,10 +1,10 @@
id: fadingui_datasource
-label: UI Framed Data Source
+label: Framed Data Source
category: '[fadingui]'
templates:
imports: import fadingui
- make: fadingui.datasource(vec_len=${vec_len}, header_len=${header_len}, sock_addr=${sock_addr}, file_list=${file_list})
+ make: fadingui.datasource(frame_obj=${frame_obj}, filename=${fname})
# Make one 'parameters' list entry for every parameter you want settable from the GUI.
# Keys include:
@@ -12,25 +12,12 @@ templates:
# * label (label shown in the GUI)
# * dtype (e.g. int, float, complex, byte, short, xxx_vector, ...)
parameters:
-- id: vec_len
- label: Vector length
- dtype: int
- default: 501
-
-- id: header_len
- label: Header length
- dtype: int
- default: 11
-
-- id: sock_addr
- label: Socket Address
- dtype: string
- default: "udp://"
-
-- id: file_list
+- id: frame_obj
+ label: Frame Object
+ type: raw
+- id: fname
label: List of files
- dtype: raw
- default: "[]"
+ dtype: file_open
# Make one 'inputs' list entry per input and one 'outputs' list entry per output.
# Keys include:
@@ -45,7 +32,6 @@ outputs:
- label: out
domain: stream
dtype: byte
- vlen: ${ vec_len + header_len }
# 'file_format' specifies the version of the GRC yml format used in the file
# and should usually not be changed.
diff --git a/src/gr-fadingui/grc/fadingui_deframer.block.yml b/src/gr-fadingui/grc/fadingui_deframer.block.yml
index b5d6cfe..02db246 100644
--- a/src/gr-fadingui/grc/fadingui_deframer.block.yml
+++ b/src/gr-fadingui/grc/fadingui_deframer.block.yml
@@ -1,6 +1,7 @@
id: fadingui_deframer
label: Deframer
category: '[fadingui]'
+labels: [ python ]
templates:
imports: import fadingui
diff --git a/src/gr-fadingui/grc/fadingui_frame_obj.block.yml b/src/gr-fadingui/grc/fadingui_frame_obj.block.yml
index 8fee3a3..c655306 100644
--- a/src/gr-fadingui/grc/fadingui_frame_obj.block.yml
+++ b/src/gr-fadingui/grc/fadingui_frame_obj.block.yml
@@ -1,10 +1,7 @@
id: fadingui_frame_obj
label: Frame Object
category: '[fadingui]'
-
-templates:
- imports: import fadingui
- make: fadingui.frame_obj()
+flags: [ show_id, python ]
# Make one 'parameters' list entry for every parameter you want settable from the GUI.
# Keys include:
@@ -14,22 +11,20 @@ templates:
parameters:
- id: preamble
label: Preamble
- dtype: raw
- default: [0xbe, 0xef]
+ dtype: int_vector
+ default: '[0xbe, 0xef]'
- id: payload_len
label: Payload length
dtype: int
default: 4096
-# Make one 'inputs' list entry per input and one 'outputs' list entry per output.
-# Keys include:
-# * label (an identifier for the GUI)
-# * domain (optional - stream or message. Default is stream)
-# * dtype (e.g. int, float, complex, byte, short, xxx_vector, ...)
-# * vlen (optional - data stream vector length. Default is 1)
-# * optional (optional - set to 1 for optional inputs. Default is 0)
-inputs:
-outputs:
+value: ${ fadingui.frame_obj }
+
+
+templates:
+ imports: import fadingui
+ var_make: |-
+ self.${id} = ${id} = fadingui.frame_obj(preamble=${preamble}, payload_len=${payload_len})
# 'file_format' specifies the version of the GRC yml format used in the file
# and should usually not be changed.
diff --git a/src/gr-fadingui/grc/fadingui_xor_frame_sync.block.yml b/src/gr-fadingui/grc/fadingui_xor_frame_sync.block.yml
index 35eb132..1a8640d 100644
--- a/src/gr-fadingui/grc/fadingui_xor_frame_sync.block.yml
+++ b/src/gr-fadingui/grc/fadingui_xor_frame_sync.block.yml
@@ -1,6 +1,7 @@
id: fadingui_xor_frame_sync
label: XOR Correlation Synchronizer
category: '[fadingui]'
+flags: [ python ]
templates:
imports: import fadingui
@@ -15,14 +16,9 @@ parameters:
- id: pattern
label: Bit pattern
dtype: raw
-
-- id: pattern_len
- label: Pattern length
- dtype: raw
-
- id: buffer_size
label: Delay buffer size
- dtype: int
+ dtype: raw
# Make one 'inputs' list entry per input and one 'outputs' list entry per output.
# Keys include:
diff --git a/src/gr-fadingui/python/CMakeLists.txt b/src/gr-fadingui/python/CMakeLists.txt
index c277a73..1318857 100644
--- a/src/gr-fadingui/python/CMakeLists.txt
+++ b/src/gr-fadingui/python/CMakeLists.txt
@@ -32,6 +32,7 @@ endif()
GR_PYTHON_INSTALL(
FILES
__init__.py
+ logger.py
datasource.py
dearpygui_sink.py
xor_frame_sync.py
diff --git a/src/gr-fadingui/python/datasource.py b/src/gr-fadingui/python/datasource.py
index c7d68f1..69a2122 100644
--- a/src/gr-fadingui/python/datasource.py
+++ b/src/gr-fadingui/python/datasource.py
@@ -8,88 +8,75 @@ import io
import numpy as np
from gnuradio import gr
+from fadingui.logger import get_logger
+log = get_logger("datasource")
-class datasource(gr.sync_block):
+
+class datasource(gr.basic_block):
"""
- Loads data from a file choosen in the graphical user interface, splits into
- chunks and puts a preamble in front of it(frame).
+ Loads data from a file choosen splits into chunks and pack them into
+ frames.
"""
- HEADER_LEN = 11;
-
- def __init__(self, vec_len, header_len, sock_addr, file_list):
- # FIXME: find a better solution
- assert(header_len == datasource.HEADER_LEN)
-
- gr.sync_block.__init__(self,
+ def __init__(self, frame_obj, filename):
+ gr.basic_block.__init__(self,
name="datasource",
in_sig=None,
- out_sig=[np.dtype(f'{vec_len + header_len}b')])
+ out_sig=[np.byte])
- # parameters
- self.vec_len = vec_len
- self.sock_addr = sock_addr
- self.file_list = file_list
+ # Frame object
+ self.frame = frame_obj
# file members
- self.fdata = None
- self.fsize = None
- self.fpos = 0
-
- # cache
- self.header_cache = None
-
- # TODO: make it possible to choose from UI
- self.load_file(file_list[0])
-
- def load_file(self, fname):
- self.fdata = np.fromfile(fname, np.byte)
+ self.fname = filename
+ self.fdata = np.fromfile(self.fname, np.byte)
self.fsize = len(self.fdata)
- # TODO: remove debugging statements or create logger
- print(f"datasource: loaded file size={self.fsize}, head:")
- print(self.fdata[:10])
+ # a frame has 5 id bits so, there can only be 2 ** 5 chunks per file
+ # see docstring of frame_obj for more details
+ nblocks = int(self.fsize / self.frame.payload_length)
+ log.debug(f"Loaded {self.fsize} bytes = {nblocks} blocks from name={self.fname}")
+ assert nblocks < 2 ** 5, "Payload size too small or file too big"
- def make_header(self, data_size):
- # TODO: check that data_size is not too big
- pilot = 0xbeef
+ self.fpos = 0
+ self.blocknr = 0
- # TODO: implement hamming code for header
- header = f"p{pilot:04x}s{data_size:04x}d".encode("ascii")
+ # would have been nice to have but does not work
+ # self.set_min_noutput_items(frame_obj.length)
- arr = np.frombuffer(header, dtype=np.dtype("byte"))
- return arr
+ # FIXME: implement buffering
+ # output buffer
+ self.outbuffer = np.array([])
- def work(self, input_items, output_items):
+ def general_work(self, input_items, output_items):
out = output_items[0]
- if self.fpos + self.vec_len > self.fsize:
- # FIXME: repair broken code below
- # TODO: create logger
- print(f"WARNING: the last {self.fsize - self.fpos} bytes were not sent!")
- self.fpos = 0
- return 0;
- rest = self.fsize - self.fpos
+ # FIXME: if there is leftover buffer add that first
+ # if self.outbuffer.size > 0:
+ # log.debug("Frame did not fit into buffer")
+ # out[:len(self.outbuffer)] = self.outbuffer
- # cannot use cached header
- header = self.make_header(rest)
- data = self.fdata[self.fpos:rest]
+ if self.fpos + self.frame.payload_length > self.fsize:
+ # FIXME: implement edge case
+ log.warning(f"The last {self.fsize - self.fpos} bytes were not sent!")
+ self.fpos = 0
+ self.blocknr = 0
- frame_size = datasource.HEADER_LEN + rest
- out[:] = np.concatenate([header, data])
+ log.debug("File finished, starting over")
+ return 0;
- self.fpos = 0
- return rest
+ data = self.fdata[self.fpos:self.fpos + self.frame.payload_length]
+ frame_bytes = self.frame.make(self.blocknr, self.frame.payload_length, data)
- # cache header if not saved
- if self.header_cache == None:
- self.header = self.make_header(self.vec_len)
+ out[:] = frame_bytes[:len(out)]
+ self.outbuffer = frame_bytes[len(out):]
- data = self.fdata[self.fpos:self.fpos + self.vec_len]
+ log.debug(f"Sent frame nr={self.blocknr}")
+ log.debug(f"Set bytes {out}")
- out[:] = np.concatenate([self.header, data])
+ self.fpos += self.frame.payload_length
+ self.blocknr += 1
- self.fpos += self.vec_len
- return len(output_items[0])
+ return self.frame.length
diff --git a/src/gr-fadingui/python/deframer.py b/src/gr-fadingui/python/deframer.py
index b7ee663..2af5ee0 100644
--- a/src/gr-fadingui/python/deframer.py
+++ b/src/gr-fadingui/python/deframer.py
@@ -8,9 +8,9 @@ from gnuradio import gr
class deframer(gr.sync_block):
"""
- docstring for block deframer
+ Check for integrity and remove frame header from packet.
"""
- def __init__(self):
+ def __init__(self, frame_obj):
gr.sync_block.__init__(self,
name="deframer",
in_sig=[np.byte],
diff --git a/src/gr-fadingui/python/frame_obj.py b/src/gr-fadingui/python/frame_obj.py
index b9dae70..136fce0 100644
--- a/src/gr-fadingui/python/frame_obj.py
+++ b/src/gr-fadingui/python/frame_obj.py
@@ -10,65 +10,82 @@ import numpy as np
from gnuradio import gr
-class frame_obj(gr.basic_block):
+class frame_obj:
"""
Frame Object: Contains informations about a data frame.
-------------------------------------------------------------------------------
| Preamble | Padding | ID | Data Length | Parity | Payload | Padding |
- | k bytes | 1 bit | 4 bits | 22 bits | 5 bits | | if necessary |
+ | k bytes | 1 bit | 5 bits | 21 bits | 5 bits | | if necessary |
-------------------------------------------------------------------------------
- | (31, 26) Hamming code EC |
- -----------------------------------
+ | (31, 26) Hamming EC code |
+ ---------------------------------
- The preamble is user defined.
- - The ID (11 bits) + Data length (22 bits) together are a 31 bits, followed
- by 26 parity bits computed using a (31,26) hamming code.
+ - The ID (5 bits) + Data length (21 bits) together are a 26 bits, followed
+ by 5 parity bits computed using a (31,26) hamming code.
- This constraints the maximum payload size to 64 MB and the number IDs to
- 1024 (i.e. max file size is 1 GB, more than enough for many thing)
+ This constraints the maximum payload size to 2 MiB and the number IDs to
+ 32, i.e. max file size is 64 MiB.
"""
def __init__(self, preamble, payload_len):
- gr.basic_block.__init__(self, name="frame_obj",
- in_sig=None, out_sig=None)
+ self._preamble = np.array(preamble, dtype=np.uint8)
- self.preamble = np.array(preamble, dtype=np.uint8)
+ self._preamble_len = len(self._preamble)
+ self._payload_len = payload_len
- self.preamble_len = len(self.preamble)
- self.payload_len = payload_len
+ @property
+ def header_length(self) -> int:
+ """Get header length in bytes"""
+ # 4 is the number of bytes for the hamming part
+ return self._preamble_len + 4
+
+ @property
+ def payload_length(self) -> int:
+ return self._payload_len
+
+ @property
+ def length(self) -> int:
+ """Get frame lenght in bytes"""
+ # 8 is the size of the hamming ECC part + 1 bit
+ return self.header_length + self.payload_length
@property
- def length(self):
- """Frame lenght in bytes"""
- return self.preamble_len + self.payload_len + 8
+ def preamble(self):
+ """Get preamble"""
+ return self._preamble
def parity(self, bits):
"""Compute the 5 parity bits for an unpacked array of 26 bits"""
assert(len(bits) == 26)
# FIXME: does not work
- # gen = np.array(
- # [[1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0],
- # [0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1],
- # [0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0],
- # [0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0],
- # [0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1]],
- # dtype=np.uint8)
# return np.matmul(bits, gen) % 2
return np.array([0, 0, 0, 0, 0])
def make(self, idv, data_len, data):
"""Make a frame"""
- return np.concatenate(self.preamble, np.packbits(hamming), data)
+ # get lower 4 bits of idv
+ idv_bits = np.unpackbits([np.uint8(idv)])[:5]
+
+ # get lower 22 bits of data_len
+ data_len_bytes = list(map(np.uint8, data_len.to_bytes(4, byteorder='little')))
+ data_len_bits = np.unpackbits(data_len_bytes)[:21]
+
+ # compute 5 parity bits
+ metadata = np.concatenate([idv_bits, data_len_bits])
+ parity_bits = self.parity(metadata)
+
+ # add padding
+ hamming_bits = np.concatenate([[0], metadata, parity_bits])
+ assert(len(hamming_bits) == 32)
+
+ # pack 32 bits into 4 bytes and add the rest
+ hamming = np.packbits(hamming_bits)
+ return np.concatenate([self.preamble, hamming, data])
def syndrome(self, bits):
"""Compute the syndrome (check Hamming code) for an unpacked array of 31 bits"""
assert(len(bits) == 31)
return reduce(op.xor, [i for i, bit in enumerate(bits) if bit])
- def general_work(self, input_items, output_items):
- """
- This block has no inputs or output
- """
- return 0;
-
diff --git a/src/gr-fadingui/python/logger.py b/src/gr-fadingui/python/logger.py
new file mode 100644
index 0000000..a189aeb
--- /dev/null
+++ b/src/gr-fadingui/python/logger.py
@@ -0,0 +1,14 @@
+import logging
+import sys
+
+formatter = logging.Formatter("[%(name)s] %(levelname)s: %(message)s")
+stdout_handler = logging.StreamHandler(sys.stdout)
+
+def get_logger(module):
+ log = logging.getLogger(module)
+
+ log.addHandler(stdout_handler)
+ stdout_handler.setFormatter(formatter)
+
+ log.setLevel(logging.DEBUG)
+ return log
diff --git a/src/gr-fadingui/python/xor_frame_sync.py b/src/gr-fadingui/python/xor_frame_sync.py
index e8d202c..51af35a 100644
--- a/src/gr-fadingui/python/xor_frame_sync.py
+++ b/src/gr-fadingui/python/xor_frame_sync.py
@@ -9,6 +9,9 @@ from numpy_ringbuffer import RingBuffer
from gnuradio import gr
+from fadingui.logger import get_logger
+log = get_logger("xor_frame_sync")
+
class xor_frame_sync(gr.sync_block):
"""
@@ -26,6 +29,7 @@ class xor_frame_sync(gr.sync_block):
self.nbytes = len(sync_pattern)
self.nbits = len(self.pattern)
+ log.debug(f"Loaded pattern {self.pattern} length={self.nbits}")
assert(self.nbits % 8 == 0)
# packed buffer to delay the data
@@ -84,12 +88,14 @@ class xor_frame_sync(gr.sync_block):
self.delaybuf.appendleft(v)
peak = np.argmax(self.xcorrs)
- self.delay = peak
- self.synchronized = True
+ if self.xcorrs[peak] == self.nbits:
+ self.delay = peak
+ self.synchronized = True
+ log.debug(f"Synchronized with delay={peak}")
- if self.xcorrs[peak] != self.nbits:
+ else:
self.synchronized = False
- print(f"Warning! XOR correlation did not find a peak (max = {self.xcorrs[peak]} should be {self.nbits})")
+ log.warning(f"Did not find a peak (max={self.xcorrs[peak]}, should be {self.nbits})")
# return data with delay
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-23 14:30:20 +0100