third_party/tflite_support/README.chromium

Name: TensorFlow Lite Support
Short Name: tflite-support
URL: https://github.com/tensorflow/tflite-support
Version: 1407175b715d29c6901bfcf5c81fa119711911aa
Date: 2022/10/24
License: Apache 2.0
License File: LICENSE
Security Critical: Yes
CPEPrefix: unknown

Description:
TFLite Support is a toolkit that helps users to develop ML and deploy TFLite
models onto mobile devices.  It works cross-Platform and is supported on
Java, C++ (WIP), and Swift (WIP).

Third party dependencies:
- tflite
- libzip
- utf
- tensorflow-text

Modifications:
01) Use re2::StringPiece instead of absl::string_view in regex_tokenizer.cc
02) Remove support for sentencepiece tokenization because the required overhead
    isn't worth adding this functionality, esp since no feature team needs it.
03) Remove the ABSL_DEPRECATED annotation from a deprecated struct since this
    is a no-op in chromium builds and upsets clang.
04) Do not use absl::any since it is not supported in chromium
05) Remove an unneeded static initializer.
06) Check (instead of resetting) the cancel_flag_ before Invoking the model.
07) Fix minizip path inclusion. Upstream uses contrib/minizip/, but chromium
    uses third_party/zlib/contrib/minizip/.
08) Fix unused variable in task_utils.h.
09) Use SysNSStringToUTF8 to convert NSString.
10) Set executable bit for common_win.bat.
11) Fix unused function/field errors on windows.
12) Remove whitespace tokenizer since it uses the unsafe function `chartorune`.
13) Remove big testdata files.
14) Run clang-format.
    * This patch might not apply cleanly, so run `git cl format` and commit the
      changes.

Update Process (internal: http://shortn/_nwz8liqimy):
1) Run these commands:

  ```
  pushd third_party/tflite_support/
  rm -rf src/
  git clone https://github.com/tensorflow/tflite-support/
  mv tflite-support/ src/
  rm -rf src/.git/
  popd
  ```

2) Apply each patch listed above residing in patches/ using `git apply
   third_party/tflite_support/patches/$PATCHFILE`.
3) Get the build working.
4) Record the patches made with `git format-patch HEAD -<number of changes>`