when building with cmake .. -DWITH_PIPEWIRE=false, following errors are met：

/home/Jin/data/community/ssr/src/GUI/PageInput.h: In member function ‘QString PageInput::GetVideoPipeWireSource()’:
/home/Jin/data/community/ssr/src/GUI/PageInput.h:305:51: error: ‘m_lineedit_video_pipewire_source’ was not declared in this scope
inline QString GetVideoPipeWireSource() { return m_lineedit_video_pipewire_source->text(); }
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/Jin/data/community/ssr/src/GUI/PageInput.h:305:51: note: suggested alternative: ‘m_lineedit_video_v4l2_device’
inline QString GetVideoPipeWireSource() { return m_lineedit_video_pipewire_source->text(); }
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
m_lineedit_video_v4l2_device
/home/Jin/data/community/ssr/src/GUI/PageInput.h: In member function ‘unsigned int PageInput::GetVideoPipeWireWidth()’:
/home/Jin/data/community/ssr/src/GUI/PageInput.h:306:55: error: ‘m_spinbox_video_pipewire_width’ was not declared in this scope
inline unsigned int GetVideoPipeWireWidth() { return m_spinbox_video_pipewire_width->value(); }
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/Jin/data/community/ssr/src/GUI/PageInput.h:306:55: note: suggested alternative: ‘m_spinbox_video_x11_width’
inline unsigned int GetVideoPipeWireWidth() { return m_spinbox_video_pipewire_width->value(); }
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
m_spinbox_video_x11_width
/home/Jin/data/community/ssr/src/GUI/PageInput.h: In member function ‘unsigned int PageInput::GetVideoPipeWireHeight()’:
/home/Jin/data/community/ssr/src/GUI/PageInput.h:307:56: error: ‘m_spinbox_video_pipewire_height’ was not declared in this scope
inline unsigned int GetVideoPipeWireHeight() { return m_spinbox_video_pipewire_height->value(); }
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/Jin/data/community/ssr/src/GUI/PageInput.h:307:56: note: suggested alternative: ‘m_spinbox_video_x11_height’
inline unsigned int GetVideoPipeWireHeight() { return m_spinbox_video_pipewire_height->value(); }
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
m_spinbox_video_x11_height

Below is benchmark result testd on LoongArch 3A5000 (4 cores 4 threads 2.5GHz)：

./src/simplescreenrecorder --benchmark
==================== SSR started ====================
SimpleScreenRecorder 0.4.4
Compiled with GCC 8.3.0
Qt: header 5.15.2, lib 5.15.2
libavformat: header 58.76.100, lib 58.76.100
libavcodec: header 58.134.100, lib 58.134.100
libavutil: header 56.70.100, lib 56.70.100
libswscale: header 5.9.100, lib 5.9.100
[CPUFeatures::Detect] CPU features: lsx lasx
[Benchmark] Starting scaler benchmark ...
[BenchmarkScale] BGRA 1920x1080 to BGRA 1920x1080 | SWScale 2152 us | Fallback 2117 us ( 98%) | SSSE3 0 us ( 0%) | LSX 2113 us ( 99%)
[BenchmarkScale] BGRA 1280x720 to BGRA 1920x1080 | SWScale 43315 us | Fallback 20073 us ( 46%) | SSSE3 0 us ( 0%) | LSX 9253 us ( 46%)
[BenchmarkScale] BGRA 1920x1080 to BGRA 1280x720 | SWScale 32846 us | Fallback 10031 us ( 30%) | SSSE3 0 us ( 0%) | LSX 4693 us ( 46%)
[BenchmarkScale] BGRA 1920x1080 to BGRA 960x540 | SWScale 27689 us | Fallback 2552 us ( 9%) | SSSE3 0 us ( 0%) | LSX 2357 us ( 92%)
[BenchmarkScale] BGRA 1920x1080 to BGRA 640x360 | SWScale 20523 us | Fallback 4684 us ( 22%) | SSSE3 0 us ( 0%) | LSX 3393 us ( 72%)
[Benchmark] Starting converter benchmark ...
[BenchmarkConvert] BGRA 1920x1080 to YUV444 1920x1080 | SWScale 38139 us | Fallback 3188 us ( 8%) | SSSE3 0 us ( 0%) | LSX 2405 us ( 75%)
[BenchmarkConvert] BGRA 1920x1080 to YUV422 1920x1080 | SWScale 27497 us | Fallback 3652 us ( 13%) | SSSE3 0 us ( 0%) | LSX 2086 us ( 57%)
[BenchmarkConvert] BGRA 1920x1080 to YUV420 1920x1080 | SWScale 27762 us | Fallback 6253 us ( 22%) | SSSE3 0 us ( 0%) | LSX 2310 us ( 36%)
[BenchmarkConvert] BGRA 1920x1080 to NV12 1920x1080 | SWScale 32535 us | Fallback 4598 us ( 14%) | SSSE3 0 us ( 0%) | LSX 2282 us ( 49%)
[BenchmarkConvert] BGRA 1920x1080 to BGR 1920x1080 | SWScale 4056 us | Fallback 1369 us ( 33%) | SSSE3 0 us ( 0%) | LSX 990 us ( 72%)
==================== SSR stopped ====================
QFileSystemWatcher::removePaths: list is empty
QFileSystemWatcher::removePaths: list is empty

@MaartenBaert ping.

I have merged your bugfix, but regarding the LSX changes, I don't like that this commit is duplicating basically all the SSE code - this seems unnecessary when the SIMDE library already provides a compatible API. It should be possible to support LSX with minimal changes to the original SSE code. However I don't have a CPU to test this on, so I can't try it myself.

Thank you, @MaartenBaert! I will try it for you. Happy New Year!

Close the PR, LSX changes will be in new PR, thanks.

Hi @MaartenBaert . The LSX changes are ready for review, see Pr #1054. Thank you!