[webkit-changes] [WebKit/WebKit] cf92dc: [GStreamer] Minimal codec parsing module

[Philippe Normand]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: cf92dc1de95a7620e873987eed9cd096d1a65851
      https://github.com/WebKit/WebKit/commit/cf92dc1de95a7620e873987eed9cd096d1a65851
  Author: Philippe Normand <philn at igalia.com>
  Date:   2022-12-09 (Fri, 09 Dec 2022)

  Changed paths:
    M Source/WebCore/platform/GStreamer.cmake
    M Source/WebCore/platform/graphics/gstreamer/GStreamerRegistryScanner.cpp
    A Source/WebCore/platform/gstreamer/GStreamerCodecUtilities.cpp
    A Source/WebCore/platform/gstreamer/GStreamerCodecUtilities.h

  Log Message:
  -----------
  [GStreamer] Minimal codec parsing module
https://bugs.webkit.org/show_bug.cgi?id=248948

Reviewed by Xabier Rodriguez-Calvar.

This patch exposes API for parsing H.264 profile and level from a codec string, this code existed in
the registry scanner before but can now be reused for eg. the upcoming WebCodecs backend. A minimal
VP9 profile parsing utility is also part of this patch.

The new file is stored in platform/gstreamer, we should gradually add new GStreamer modules there
when appropriate. Some of the platform/graphics/gstreamer files could also move there at some point.

* Source/WebCore/platform/GStreamer.cmake:
* Source/WebCore/platform/graphics/gstreamer/GStreamerRegistryScanner.cpp:
(WebCore::GStreamerRegistryScanner::isAVC1CodecSupported const):
* Source/WebCore/platform/gstreamer/GStreamerCodecUtilities.cpp: Added.
(WebCore::ensureDebugCategoryInitialized):
(WebCore::GStreamerCodecUtilities::parseVP9Profile):
* Source/WebCore/platform/gstreamer/GStreamerCodecUtilities.h: Added.

Canonical link: https://commits.webkit.org/257615@main