camera: add PipeWire camera support

The PipeWire camera will enumerate the pipewire Video/Source nodes with
their formats.

When capturing is started, a stream to the node will be created and
frames will be captured.
This commit is contained in:
Wim Taymans 2024-05-07 18:26:00 +02:00 committed by Sam Lantinga
parent 890ceb4ac4
commit a340748c06
5 changed files with 1190 additions and 0 deletions

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@ -139,13 +139,16 @@ macro(CheckPipewire)
if(PC_PIPEWIRE_FOUND)
set(HAVE_PIPEWIRE TRUE)
sdl_glob_sources("${SDL3_SOURCE_DIR}/src/audio/pipewire/*.c")
sdl_glob_sources("${SDL3_SOURCE_DIR}/src/camera/pipewire/*.c")
set(SDL_AUDIO_DRIVER_PIPEWIRE 1)
set(SDL_CAMERA_DRIVER_PIPEWIRE 1)
if(SDL_PIPEWIRE_SHARED AND NOT HAVE_SDL_LOADSO)
message(WARNING "You must have SDL_LoadObject() support for dynamic PipeWire loading")
endif()
FindLibraryAndSONAME("pipewire-0.3" LIBDIRS ${PC_PIPEWIRE_LIBRARY_DIRS})
if(SDL_PIPEWIRE_SHARED AND PIPEWIRE_0.3_LIB AND HAVE_SDL_LOADSO)
set(SDL_AUDIO_DRIVER_PIPEWIRE_DYNAMIC "\"${PIPEWIRE_0.3_LIB_SONAME}\"")
set(SDL_CAMERA_DRIVER_PIPEWIRE_DYNAMIC "\"${PIPEWIRE_0.3_LIB_SONAME}\"")
set(HAVE_PIPEWIRE_SHARED TRUE)
sdl_link_dependency(pipewire INCLUDES $<TARGET_PROPERTY:PkgConfig::PC_PIPEWIRE,INTERFACE_INCLUDE_DIRECTORIES>)
else()

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@ -485,6 +485,8 @@
#cmakedefine SDL_CAMERA_DRIVER_ANDROID @SDL_CAMERA_DRIVER_ANDROID@
#cmakedefine SDL_CAMERA_DRIVER_EMSCRIPTEN @SDL_CAMERA_DRIVER_EMSCRIPTEN@
#cmakedefine SDL_CAMERA_DRIVER_MEDIAFOUNDATION @SDL_CAMERA_DRIVER_MEDIAFOUNDATION@
#cmakedefine SDL_CAMERA_DRIVER_PIPEWIRE @SDL_CAMERA_DRIVER_PIPEWIRE@
#cmakedefine SDL_CAMERA_DRIVER_PIPEWIRE_DYNAMIC @SDL_CAMERA_DRIVER_PIPEWIRE_DYNAMIC@
/* Enable misc subsystem */
#cmakedefine SDL_MISC_DUMMY @SDL_MISC_DUMMY@

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@ -34,6 +34,9 @@ static const CameraBootStrap *const bootstrap[] = {
#ifdef SDL_CAMERA_DRIVER_V4L2
&V4L2_bootstrap,
#endif
#ifdef SDL_CAMERA_DRIVER_PIPEWIRE
&PIPEWIRECAMERA_bootstrap,
#endif
#ifdef SDL_CAMERA_DRIVER_COREMEDIA
&COREMEDIA_bootstrap,
#endif

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@ -205,6 +205,7 @@ typedef struct CameraBootStrap
// Not all of these are available in a given build. Use #ifdefs, etc.
extern CameraBootStrap DUMMYCAMERA_bootstrap;
extern CameraBootStrap V4L2_bootstrap;
extern CameraBootStrap PIPEWIRECAMERA_bootstrap;
extern CameraBootStrap COREMEDIA_bootstrap;
extern CameraBootStrap ANDROIDCAMERA_bootstrap;
extern CameraBootStrap EMSCRIPTENCAMERA_bootstrap;

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