Project import generated by Copybara.

GitOrigin-RevId: b2062656e5b3d33264e28ed0cbca31c4b93fe1bf

CONTRIBUTING.md

@@ -1,15 +1,17 @@
 # Contributing guidelines
 
-## Pull Request Checklist
+## What type of pull request do we accept into MediaPipe repository?
+
+* Bug fixes
+* Documentation fixes
+
+For new feature additions (e.g., new graphs and calculators), we are currently not planning to accept new feature pull requests into the MediaPipe repository. Instead, we like to get contributors to create their own repositories of the new feature and list it at [Awesome MediaPipe](https://mediapipe.org). This will allow contributors to more quickly get their code out to the community.
 
 Before sending your pull requests, make sure you followed this list.
 
 - Read [contributing guidelines](CONTRIBUTING.md).
 - Read [Code of Conduct](CODE_OF_CONDUCT.md).
 - Ensure you have signed the [Contributor License Agreement (CLA)](https://cla.developers.google.com/).
-- Check if my changes are consistent with the [guidelines](https://github.com/google/mediapipe/blob/master/CONTRIBUTING.md#general-guidelines-and-philosophy-for-contribution).
-- Changes are consistent with the [Coding Style](https://github.com/google/mediapipe/blob/master/CONTRIBUTING.md#c-coding-style).
-- Run [Unit Tests](https://github.com/google/mediapipe/blob/master/CONTRIBUTING.md#running-unit-tests).
 
 ## How to become a contributor and submit your own code
 
@@ -28,100 +30,7 @@ Follow either of the two links above to access the appropriate CLA and instructi
 
 ### Contributing code
 
-If you have improvements to MediaPipe, send us your pull requests! For those
+If you have bug fixes and documentation fixes to MediaPipe, send us your pull requests! For those
 just getting started, GitHub has a [howto](https://help.github.com/articles/using-pull-requests/).
 
-MediaPipe team members will be assigned to review your pull requests. Once the
-pull requests are approved and pass continuous integration checks, a MediaPipe
-team member will apply `ready to pull` label to your change. This means we are
-working on getting your pull request submitted to our internal repository. After
-the change has been submitted internally, your pull request will be merged
-automatically on GitHub.
-
-If you want to contribute but you're not sure where to start, take a look at the
-[issues with the "contributions welcome" label](https://github.com/google/mediapipe/labels/stat%3Acontributions%20welcome).
-These are issues that we believe are particularly well suited for outside
-contributions, often because we probably won't get to them right now. If you
-decide to start on an issue, leave a comment so that other people know that
-you're working on it. If you want to help out, but not alone, use the issue
-comment thread to coordinate.
-
-### Contribution guidelines and standards
-
-Before sending your pull request for
-[review](https://github.com/google/mediapipe/pulls),
-make sure your changes are consistent with the guidelines and follow the
-MediaPipe coding style.
-
-#### General guidelines and philosophy for contribution
-
-*   Include unit tests when you contribute new features, as they help to a)
-    prove that your code works correctly, and b) guard against future breaking
-    changes to lower the maintenance cost.
-*   Bug fixes also generally require unit tests, because the presence of bugs
-    usually indicates insufficient test coverage.
-*   Keep API compatibility in mind when you change code in MediaPipe framework
-    e.g., code in
-    [mediapipe/framework](https://github.com/google/mediapipe/tree/master/mediapipe/framework)
-    and
-    [mediapipe/calculators](https://github.com/google/mediapipe/tree/master/mediapipe/calculators).
-    Once MediaPipe has reached version 1 and we will not make
-    non-backward-compatible API changes without a major release. Reviewers of
-    your pull request will comment on any API compatibility issues.
-*   When you contribute a new feature to MediaPipe, the maintenance burden is
-    (by default) transferred to the MediaPipe team. This means that benefit of
-    the contribution must be compared against the cost of maintaining the
-    feature.
-*   Full new features (e.g., a new op implementing a cutting-edge algorithm)
-    typically will live in
-    [mediapipe/addons](https://github.com/google/mediapipe/addons) to get some
-    airtime before decision is made regarding whether they are to be migrated to
-    the core.
-
-#### License
-
-Include a license at the top of new files.
-
-* [C/C++ license example](https://github.com/google/mediapipe/blob/master/mediapipe/framework/calculator_base.cc#L1)
-* [Java license example](https://github.com/google/mediapipe/blob/master/mediapipe/java/com/google/mediapipe/components/CameraHelper.java)
-
-Bazel BUILD files also need to include a license section, e.g.,
-[BUILD example](https://github.com/google/mediapipe/blob/master/mediapipe/framework/BUILD#L61).
-
-#### C++ coding style
-
-Changes to MediaPipe C++ code should conform to
-[Google C++ Style Guide](https://google.github.io/styleguide/cppguide.html).
-
-Use `clang-tidy` to check your C/C++ changes. To install `clang-tidy` on ubuntu:16.04, do:
-
-```bash
-apt-get install -y clang-tidy
-```
-
-You can check a C/C++ file by doing:
-
-
-```bash
-clang-format <my_cc_file> --style=google > /tmp/my_cc_file.cc
-diff <my_cc_file> /tmp/my_cc_file.cc
-```
-
-#### Coding style for other languages
-
-* [Google Java Style Guide](https://google.github.io/styleguide/javaguide.html)
-* [Google JavaScript Style Guide](https://google.github.io/styleguide/jsguide.html)
-* [Google Shell Style Guide](https://google.github.io/styleguide/shell.xml)
-* [Google Objective-C Style Guide](https://google.github.io/styleguide/objcguide.html)
-
-#### Running sanity check
-
-If you have Docker installed on your system, you can perform a sanity check on
-your changes by running the command:
-
-```bash
-mediapipe/tools/ci_build/ci_build.sh CPU mediapipe/tools/ci_build/ci_sanity.sh
-```
-
-This will catch most license, Python coding style and BUILD file issues that
-may exist in your changes.
+MediaPipe team members will be assigned to review your pull requests. Once the bug/documentation fixes are verified, a MediaPipe team member will acknowledge your contribution in the pull request comments, manually merge the fixes into our internal codebase upstream, and apply the `to be closed` label to the pull request. These fixes will later be pushed to GitHub in the next release, and a MediaPipe team member will then close the pull request.

README.md

@@ -123,7 +123,7 @@ run code search using
 
 *   [Awesome MediaPipe](https://mediapipe.org) - A curated list of awesome
     MediaPipe related frameworks, libraries and software
-*   [Slack community](https://https://mediapipe.page.link/joinslack) for MediaPipe users
+*   [Slack community](https://mediapipe.page.link/joinslack) for MediaPipe users
 *   [Discuss](https://groups.google.com/forum/#!forum/mediapipe) - General
     community discussion around MediaPipe
 

docs/framework_concepts/calculators.md

@@ -207,8 +207,8 @@ class SomeAudioVideoCalculator : public CalculatorBase {
     // particular type.  SetAny() has the same effect as explicitly
     // setting the type to be the stream's type.
     cc->Outputs().Tag("VIDEO").Set<ImageFrame>();
-    cc->Outputs().Get("AUDIO", 0).Set<Matrix>;
-    cc->Outputs().Get("AUDIO", 1).Set<Matrix>;
+    cc->Outputs().Get("AUDIO", 0).Set<Matrix>();
+    cc->Outputs().Get("AUDIO", 1).Set<Matrix>();
     return ::mediapipe::OkStatus();
   }
 ```
@@ -400,13 +400,13 @@ node {
 ```
 
 The diagram below shows how the `PacketClonerCalculator` defines its output
-packets based on its series of input packets.
+packets (bottom) based on its series of input packets (top).
 
 | ![Graph using                                                                |
 : PacketClonerCalculator](../images/packet_cloner_calculator.png)              :
 | :--------------------------------------------------------------------------: |
 | *Each time it receives a packet on its TICK input stream, the                |
 : PacketClonerCalculator outputs the most recent packet from each of its input :
-: streams. The sequence of output packets is determined by the sequene of      :
-: input packets and their timestamps. The timestamps are shows along the right :
-: side of the diagram.*                                                        :
+: streams. The sequence of output packets (bottom) is determined by the        :
+: sequence of input packets (top) and their timestamps. The timestamps are     :
+: shown along the right side of the diagram.*                                  :