Add Python timeline viewer (#39)

This PR is the first commit of the Timeline Viewer, which is functional 
but still needs further refactoring and documentation needs adding.

.github/workflows/build_test.yaml

@@ -29,9 +29,9 @@ jobs:
 
       - name: Check code style
         run: |
-          python3 -m pycodestyle ./*.py
-          python3 -m pycodestyle ./lglpy
-          python3 -m pycodestyle ./generator
+          python3 -m pycodestyle --config .pycodestyle.ini ./*.py
+          python3 -m pycodestyle --config .pycodestyle.ini ./lglpy
+          python3 -m pycodestyle --config .pycodestyle.ini ./generator
 
       - name: Check typing
         run: |

.gitignore

@@ -11,10 +11,12 @@ build*
 # Data files and build outputs
 *.gputl
 *.log
+*.perfetto
 *.so
 
 # Build and debug output files
 /.cache
+/.mypy_cache
 /bin*
 /log*
 /x_*

.mypy.ini

@@ -0,0 +1,10 @@
+[mypy]
+exclude = lglpy/timeline/protos/.*\.py
+ignore_missing_imports = True
+disable_error_code = annotation-unchecked
+
+[mypy-lglpy.timeline.data.raw_trace]
+disable_error_code = attr-defined
+
+[mypy-google.*]
+ignore_missing_imports = True

.pycodestyle.ini

@@ -0,0 +1,4 @@
+[pycodestyle]
+exclude = lglpy/timeline/protos
+ignore = E402,E126,E127
+max-line-length = 80

.pylintrc

@@ -46,7 +46,7 @@ fail-under=10
 #from-stdin=
 
 # Files or directories to be skipped. They should be base names, not paths.
-ignore=CVS
+ignore=CVS,protos
 
 # Add files or directories matching the regular expressions patterns to the
 # ignore-list. The regex matches against paths and can be in Posix or Windows
@@ -64,7 +64,7 @@ ignore-patterns=^\.#
 # manipulated during runtime and thus existing member attributes cannot be
 # deduced by static analysis). It supports qualified module names, as well as
 # Unix pattern matching.
-ignored-modules=
+ignored-modules=cairo,protos
 
 # Python code to execute, usually for sys.path manipulation such as
 # pygtk.require().
@@ -73,7 +73,7 @@ ignored-modules=
 # Use multiple processes to speed up Pylint. Specifying 0 will auto-detect the
 # number of processors available to use, and will cap the count on Windows to
 # avoid hangs.
-jobs=1
+jobs=0
 
 # Control the amount of potential inferred values when inferring a single
 # object. This can help the performance when dealing with large functions or
@@ -293,7 +293,7 @@ ignored-parents=
 max-args=5
 
 # Maximum number of attributes for a class (see R0902).
-max-attributes=7
+max-attributes=12
 
 # Maximum number of boolean expressions in an if statement (see R0916).
 max-bool-expr=5
@@ -342,7 +342,7 @@ indent-after-paren=4
 indent-string='    '
 
 # Maximum number of characters on a single line.
-max-line-length=100
+max-line-length=80
 
 # Maximum number of lines in a module.
 max-module-lines=1000
@@ -436,7 +436,8 @@ disable=raw-checker-failed,
         use-implicit-booleaness-not-comparison-to-string,
         use-implicit-booleaness-not-comparison-to-zero,
         use-symbolic-message-instead,
-        duplicate-code
+        duplicate-code,
+        arguments-differ
 
 # Enable the message, report, category or checker with the given id(s). You can
 # either give multiple identifier separated by comma (,) or put this option
@@ -456,8 +457,7 @@ timeout-methods=requests.api.delete,requests.api.get,requests.api.head,requests.
 
 # List of note tags to take in consideration, separated by a comma.
 notes=FIXME,
-      XXX,
-      TODO
+      XXX
 
 # Regular expression of note tags to take in consideration.
 notes-rgx=
@@ -521,7 +521,7 @@ ignore-imports=yes
 ignore-signatures=yes
 
 # Minimum lines number of a similarity.
-min-similarity-lines=4
+min-similarity-lines=10
 
 
 [SPELLING]

LICENSE.txt

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2024 Arm Limited
+Copyright (c) 2024-2025 Arm Limited
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

lgl_mali_trace_viewer.py

@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: MIT
+# -----------------------------------------------------------------------------
+# Copyright (c) 2024-2025 Arm Limited
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the 'Software'), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+# -----------------------------------------------------------------------------
+'''
+TODO
+'''
+
+import argparse
+import sys
+
+from lglpy.timeline.gui.window import Window
+
+
+def parse_cli():
+    '''
+    Parse the command line.
+
+    Returns:
+        Return an argparse results object.
+    '''
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument('-s', '--style', dest='style',
+                        choices=('light', 'dark'), default='dark',
+                        help='GUI skin to use')
+
+    parser.add_argument('input', nargs='?', metavar='PERFETTO_IN',
+                        type=argparse.FileType('rb'), default=None,
+                        help='input Perfetto file to load')
+
+    parser.add_argument('input2', nargs='?', metavar='GPUTL_IN',
+                        type=argparse.FileType('rb'), default=None,
+                        help='input GPU timeline file to load')
+
+    args = parser.parse_args()
+    return args
+
+
+def main():
+    '''
+    Generate a coverage report on stdout.
+    '''
+    args = parse_cli()
+
+    # Start the GUI - this enters the GTK message loop
+    trace_file_name = None
+    if args.input:
+        trace_file_name = args.input.name
+        args.input.close()
+
+    metadata_file_name = None
+    if args.input2:
+        metadata_file_name = args.input2.name
+        args.input2.close()
+
+    Window(args.style, trace_file_name, metadata_file_name)
+
+
+if __name__ == '__main__':
+    sys.exit(main())

lglpy/comms/service_gpu_timeline.py

@@ -112,7 +112,7 @@ def handle_render_pass(self, msg: Any) -> None:
 
         # If this is a continuation then merge records
         if last_render_pass and (last_render_pass['tid'] == msg['tid']):
-            # Don't accumulate if tagID is flagged as ambiguous
+            # Don't accumulate if tag_id is flagged as ambiguous
             if last_render_pass['drawCallCount'] != -1:
                 last_render_pass['drawCallCount'] += msg['drawCallCount']
 

lglpy/timeline/__init__.py

@@ -0,0 +1,30 @@
+# SPDX-License-Identifier: MIT
+# -----------------------------------------------------------------------------
+# Copyright (c) 2024-2025 Arm Limited
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the 'Software'), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+# -----------------------------------------------------------------------------
+'''
+TODO
+'''
+
+import sys
+import os
+
+sys.path.insert(0, os.path.abspath(os.path.dirname(__file__)))