Sound (FreeBSD): new impl; drop pulseaudio dep

Author: CarterLi

CMakeLists.txt

@@ -66,7 +66,7 @@ cmake_dependent_option(ENABLE_OSMESA "Enable osmesa" ON "LINUX OR BSD" OFF)
 cmake_dependent_option(ENABLE_OPENCL "Enable opencl" ON "LINUX OR BSD OR WIN32" OFF)
 cmake_dependent_option(ENABLE_LIBNM "Enable libnm" ON "LINUX" OFF)
 cmake_dependent_option(ENABLE_FREETYPE "Enable freetype" ON "ANDROID" OFF)
-cmake_dependent_option(ENABLE_PULSE "Enable pulse" ON "LINUX OR BSD" OFF)
+cmake_dependent_option(ENABLE_PULSE "Enable pulse" ON "LINUX" OFF)
 cmake_dependent_option(ENABLE_DDCUTIL "Enable ddcutil" ON "LINUX" OFF)
 cmake_dependent_option(ENABLE_DIRECTX_HEADERS "Enable DirectX headers for WSL" ON "LINUX" OFF)
 cmake_dependent_option(ENABLE_THREADS "Enable multithreading" ON "Threads_FOUND" OFF)
@@ -533,7 +533,7 @@ elseif(BSD)
         src/detection/poweradapter/poweradapter_nosupport.c
         src/detection/processes/processes_bsd.c
         src/detection/gtk_qt/qt.c
-        src/detection/sound/sound_linux.c
+        src/detection/sound/sound_bsd.c
         src/detection/swap/swap_bsd.c
         src/detection/temps/temps_bsd.c
         src/detection/terminalfont/terminalfont_linux.c
@@ -954,6 +954,7 @@ elseif(BSD)
         PRIVATE "m"
         PRIVATE "usbhid"
         PRIVATE "geom"
+        PRIVATE "mixer"
     )
 elseif(ANDROID)
     CHECK_LIBRARY_EXISTS(-l:libandroid-wordexp.a wordexp "" HAVE_LIBANDROID_WORDEXP_STATIC)

src/detection/sound/sound_bsd.c

@@ -0,0 +1,38 @@
+#include "sound.h"
+
+#include <mixer.h>
+
+const char* ffDetectSound(FFlist* devices)
+{
+    int nmixers = mixer_get_nmixers();
+    if (nmixers == 0) return "No mixers found";
+
+    if (__builtin_expect(nmixers > 9, false)) nmixers = 9;
+
+    char path[] = "/dev/mixer0";
+
+    for (int idev = 0; idev < nmixers; ++idev)
+    {
+        path[strlen("/dev/mixer")] = (char) ('0' + idev);
+        struct mixer* m = mixer_open(path);
+        if (!m) continue;
+
+        if (m->mode & MIX_MODE_PLAY)
+        {
+            struct mix_dev* dev = mixer_get_dev_byname(m, "vol");
+            if (dev)
+            {
+                FFSoundDevice* device = ffListAdd(devices);
+                ffStrbufInitS(&device->identifier, path);
+                ffStrbufInitF(&device->name, "%s %s", m->ci.longname, m->ci.hw_info);
+                device->volume = MIX_ISMUTE(m, dev->devno) ? 0 : (uint8_t) MIX_VOLDENORM((dev->vol.left + dev->vol.right) / 2);
+                device->active = true;
+                device->main = !!m->f_default;
+            }
+        }
+
+        mixer_close(m);
+    }
+
+    return NULL;
+}