[audio] Nuke cubeb and use SDL3 exclusively

Signed-off-by: lizzie <lizzie@eden-emu.dev>

docs/Caveats.md

@@ -100,8 +100,6 @@ For reasons unberknownst to any human being, `glslangValidator` will crash upon
 
 For this reason this patch is NOT applied to default on all platforms (for obvious reasons) - instead this is a HaikuOS specific patch, apply with `git apply <absolute path to patch>` after cloning SPIRV-Tools then `make -C build` and add the resulting binary (in `build/StandAlone/glslang`) into PATH.
 
-`cubeb_devel` will also not work, either disable cubeb or uninstall it.
-
 Still will not run flawlessly until `mesa-24` is available. Modify CMakeCache.txt with the `.so` of libGL and libGLESv2 by doing the incredibly difficult task of copy pasting them (`cp /boot/system/lib/libGL.so .`)
 
 If you have `quazip1_qt6_devel`, uninstall it. It may call `Core5Compat` on CMake which is wrongly packaged.

docs/Deps.md

@@ -73,7 +73,6 @@ Certain other dependencies will be fetched by CPM regardless. System packages *c
 
 * [SimpleIni](https://github.com/brofield/simpleini)
 * [DiscordRPC](https://github.com/eden-emulator/discord-rpc)
-* [cubeb](https://github.com/mozilla/cubeb)
 * [libusb](https://github.com/libusb/libusb)
 * [VulkanMemoryAllocator](https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator)
 * [sirit](https://github.com/eden-emulator/sirit)
@@ -122,7 +121,7 @@ sudo emerge -a \
     dev-util/spirv-tools dev-util/spirv-headers dev-util/vulkan-headers \
     dev-util/vulkan-utility-libraries dev-util/glslang \
     media-gfx/renderdoc media-libs/libva media-libs/opus media-video/ffmpeg \
-    media-libs/VulkanMemoryAllocator media-libs/libsdl3 media-libs/cubeb \
+    media-libs/VulkanMemoryAllocator media-libs/libsdl3 \
     net-libs/enet \
     sys-libs/zlib \
     dev-cpp/nlohmann_json dev-cpp/simpleini dev-cpp/cpp-httplib dev-cpp/cpp-jwt \
@@ -356,7 +355,7 @@ pacman -Syuu --needed --noconfirm $packages
 <summary>HaikuOS</summary>
 
 ```sh
-pkgman install git cmake patch libfmt_devel nlohmann_json lz4_devel opus_devel boost1.90_devel vulkan_devel qt6_base_devel qt6_declarative_devel libsdl3_devel ffmpeg7_devel libx11_devel enet_devel catch2_devel quazip1_qt5_devel qt6_5compat_devel glslang qt6_devel qt6_charts_devel cubeb_devel simpleini quazip_qt6_devel
+pkgman install git cmake patch libfmt_devel nlohmann_json lz4_devel opus_devel boost1.90_devel vulkan_devel qt6_base_devel qt6_declarative_devel libsdl3_devel ffmpeg7_devel libx11_devel enet_devel catch2_devel quazip1_qt5_devel qt6_5compat_devel glslang qt6_devel qt6_charts_devel simpleini quazip_qt6_devel
 ```
 
 [Caveats](./Caveats.md#haikuos).

docs/DesignOverview.md

@@ -4,7 +4,7 @@ Modern game consoles require heavy power to be emulated appropriately. This is w
 
 For example, take a disk write, instead of emulating a proper SD card we instead use the C++ standard library for I/O. Additionally we use the abstractions provided by the `fs` service to "lie" to programs about certain SD card properties. Notably this includes making up sizes for the fake SD card, giving "realistic" values or expected outputs for a given card, and so on. And instead of writing to an actual SD card, the emulator simply writes to a file.
 
-This also means grand part of the emulator consists of just re-implementing firmware but using HLE primitives; for example audio doesn't go to an emulated audio device, but rather gets processed on the fly by a dedicated service and then passed to SDL3/cubeb/etc.
+This also means grand part of the emulator consists of just re-implementing firmware but using HLE primitives; for example audio doesn't go to an emulated audio device, but rather gets processed on the fly by a dedicated service and then passed to SDL3 or null backend.
 
 As such, many of the systems implemented are not 100% accurate to the original software, but they're "good enough" to pass as being so. While we do strive to maintain high compatibility (especially with homebrew), there are realistic limitations to these approaches.
 

docs/Options.md

@@ -35,8 +35,6 @@ These options control dependencies.
 
 - `ENABLE_WEB_SERVICE` (ON) Enable multiplayer service
 - `ENABLE_WIFI_SCAN` (OFF) Enable WiFi scanning (requires iw on Linux) - experimental
-- `ENABLE_CUBEB` (ON) Enables the cubeb audio backend
-  - This option is subject for removal.
 - `YUZU_TESTS` (ON) Compile tests - requires Catch2
 - `ENABLE_LTO` (OFF) Enable link-time optimization
   - Not recommended on Windows