PipeWire capturer: implement proper DMA-BUFs support

Currently both KWin (KDE) and Mutter (GNOME) window managers don't
use DMA-BUFs by default, but only when client asks specifically for
them (KWin) or when experimental DMA-BUF support is enabled (Mutter).
While current implementation works just fine on integrated graphics
cards, it causes issues on dedicated GPUs (AMD and NVidia) where the
code either crashes or screensharing is slow and unusable.

To fix this, DMA-BUFs has to be opened using OpenGL context and not
being directly mmaped(). This implementation requires to use DMA-BUF
modifiers, as they are now mandatory for DMA-BUFs usage.

Documentation for this behavior can be found here:
https://gitlab.freedesktop.org/pipewire/pipewire/-/blob/master/doc/dma-buf.dox

Bug: chromium:1233417, webrtc:13137
Change-Id: I0cecf16d6bb0f576954b9e8f071cab526f7baf2c
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/227022
Commit-Queue: Tommi <tommi@webrtc.org>
Reviewed-by: Tommi <tommi@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#34889}
8 files changed
tree: ebb9f42a54a3482a33ae34f321deb5a8c008b7dd
  1. api/
  2. audio/
  3. build_overrides/
  4. call/
  5. common_audio/
  6. common_video/
  7. data/
  8. docs/
  9. examples/
  10. g3doc/
  11. logging/
  12. media/
  13. modules/
  14. net/
  15. p2p/
  16. pc/
  17. resources/
  18. rtc_base/
  19. rtc_tools/
  20. sdk/
  21. stats/
  22. system_wrappers/
  23. test/
  24. tools_webrtc/
  25. video/
  26. .clang-format
  27. .git-blame-ignore-revs
  28. .gitignore
  29. .gn
  30. .vpython
  31. AUTHORS
  32. BUILD.gn
  33. CODE_OF_CONDUCT.md
  34. codereview.settings
  35. DEPS
  36. DIR_METADATA
  37. ENG_REVIEW_OWNERS
  38. g3doc.lua
  39. LICENSE
  40. license_template.txt
  41. native-api.md
  42. OWNERS
  43. PATENTS
  44. PRESUBMIT.py
  45. presubmit_test.py
  46. presubmit_test_mocks.py
  47. pylintrc
  48. README.chromium
  49. README.md
  50. WATCHLISTS
  51. webrtc.gni
  52. webrtc_lib_link_test.cc
  53. whitespace.txt
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.

Development

See here for instructions on how to get started developing with the native code.

Authoritative list of directories that contain the native API header files.

More info