Optimize ParseRbsp method in H264 bitstream parser.

After profiling, sakal@ found that this method was taking very long,
and causing the bitstream parsing to take up to 1ms per frame. The
culprit proved to be rtc::Buffer::AppendData, which was called for
every byte and subsequently calls memcpy.

BUG=webrtc:7293

Review-Url: https://codereview.webrtc.org/2728093002
Cr-Commit-Position: refs/heads/master@{#17051}
6 files changed
tree: 8679f51fa294bd0131ec48a767a1a5d0cb62d639
  1. build_overrides/
  2. data/
  3. infra/
  4. resources/
  5. tools-webrtc/
  6. webrtc/
  7. .clang-format
  8. .git-blame-ignore-revs
  9. .gitignore
  10. .gn
  11. AUTHORS
  12. BUILD.gn
  13. check_root_dir.py
  14. cleanup_links.py
  15. codereview.settings
  16. DEPS
  17. LICENSE
  18. license_template.txt
  19. LICENSE_THIRD_PARTY
  20. OWNERS
  21. PATENTS
  22. PRESUBMIT.py
  23. pylintrc
  24. README.md
  25. WATCHLISTS
README.md

WebRTC is a free, open software project that provides browsers and mobile applications with Real-Time Communications (RTC) capabilities via simple APIs. The WebRTC components have been optimized to best serve this purpose.

Our mission: To enable rich, high-quality RTC applications to be developed for the browser, mobile platforms, and IoT devices, and allow them all to communicate via a common set of protocols.

The WebRTC initiative is a project supported by Google, Mozilla and Opera, amongst others. This page is maintained by the Google Chrome team.

Development

See http://www.webrtc.org/native-code/development for instructions on how to get started developing with the native code.

More info