From e2828babbed0b58e462f06713687565d8b881170 Mon Sep 17 00:00:00 2001
From: Joshua Ashton <joshua@froggi.es>
Date: Mon, 5 Feb 2024 12:05:04 +0000
Subject: [PATCH] build: Make libavif and SDL2 optional

---
 meson_options.txt    |  2 ++
 src/main.cpp         |  2 ++
 src/meson.build      | 13 ++++++++++---
 src/steamcompmgr.cpp |  5 +++++
 4 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/meson_options.txt b/meson_options.txt
index c2c90b612..1e7754e8e 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,5 +1,7 @@
 option('pipewire', type: 'feature', description: 'Screen capture via PipeWire')
 option('drm_backend',                type: 'feature', description: 'DRM Atomic Backend')
+option('sdl2_backend',               type: 'feature', description: 'SDL2 Window Backend')
+option('avif_screenshots',           type: 'feature', description: 'Support for saving .AVIF HDR screenshots')
 option('enable_gamescope',           type : 'boolean', value : true, description: 'Build Gamescope executable')
 option('enable_gamescope_wsi_layer', type : 'boolean', value : true, description: 'Build Gamescope layer')
 option('enable_openvr_support',      type : 'boolean', value : true, description: 'OpenVR Integrations')
diff --git a/src/main.cpp b/src/main.cpp
index a2665d112..a37899df9 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -783,9 +783,11 @@ int main(int argc, char **argv)
 			gamescope::IBackend::Set<gamescope::CDRMBackend>();
 			break;
 #endif
+#if HAVE_SDL2
 		case gamescope::GamescopeBackend::SDL:
 			gamescope::IBackend::Set<gamescope::CSDLBackend>();
 			break;
+#endif
 #if HAVE_OPENVR
 		case gamescope::GamescopeBackend::OpenVR:
 			gamescope::IBackend::Set<gamescope::COpenVRBackend>();
diff --git a/src/meson.build b/src/meson.build
index d23176781..4b2a5bcb1 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -19,9 +19,9 @@ thread_dep = dependency('threads')
 cap_dep = dependency('libcap', required: false)
 epoll_dep = dependency('epoll-shim', required: false)
 glm_dep = dependency('glm')
-sdl_dep = dependency('SDL2')
+sdl_dep = dependency('SDL2', required: get_option('sdl2_backend'))
 stb_dep = dependency('stb')
-avif_dep = dependency('libavif', version: '>=1.0.0')
+avif_dep = dependency('libavif', version: '>=1.0.0', required: get_option('avif_screenshots'))
 
 wlroots_dep = dependency(
   'wlroots',
@@ -107,6 +107,14 @@ if drm_dep.found()
   gamescope_cpp_args += '-DHAVE_DRM=@0@'.format(drm_dep.found().to_int())
 endif
 
+if sdl_dep.found()
+  src += 'sdlwindow.cpp'
+  gamescope_cpp_args += '-DHAVE_SDL2=@0@'.format(sdl_dep.found().to_int())
+endif
+
+if avif_dep.found()
+  gamescope_cpp_args += '-DHAVE_AVIF=@0@'.format(avif_dep.found().to_int())
+endif
 
 src = [
   'steamcompmgr.cpp',
@@ -116,7 +124,6 @@ src = [
   'headless.cpp',
   'wlserver.cpp',
   'modegen.cpp',
-  'sdlwindow.cpp',
   'vblankmanager.cpp',
   'rendervulkan.cpp',
   'log.cpp',
diff --git a/src/steamcompmgr.cpp b/src/steamcompmgr.cpp
index e3dae6154..a01e91c60 100644
--- a/src/steamcompmgr.cpp
+++ b/src/steamcompmgr.cpp
@@ -89,7 +89,9 @@
 #include "mwm_hints.h"
 #include "edid.h"
 
+#if HAVE_AVIF
 #include "avif/avif.h"
+#endif
 
 static const int g_nBaseCursorScale = 36;
 
@@ -2908,6 +2910,8 @@ paint_all(bool async)
 						}
 					}
 
+					assert( HAVE_AVIF );
+#if HAVE_AVIF
 					avifResult avifResult = AVIF_RESULT_OK;
 
 					avifImage *pAvifImage = avifImageCreate( g_nOutputWidth, g_nOutputHeight, 10, AVIF_PIXEL_FORMAT_YUV444 );
@@ -2976,6 +2980,7 @@ paint_all(bool async)
 
 					xwm_log.infof( "Screenshot saved to %s", oScreenshotInfo->szScreenshotPath.c_str() );
 					bScreenshotSuccess = true;
+#endif
 				}
 				else if (pScreenshotTexture->format() == VK_FORMAT_B8G8R8A8_UNORM)
 				{