Sound (OpenBSD): Use sndio instead of pulseaudio

2026-09-13 10:52:08 +02:00 · 2025-01-27 00:30:55 +08:00
parent 1279bbcf28
commit b76e62685e
2 changed files with 88 additions and 1 deletions
@@ -0,0 +1,86 @@
+#include "sound.h"
+#include "util/stringUtils.h"
+
+#include <fcntl.h>
+#include <sndio.h>
+
+static void close_hdl(struct sioctl_hdl** phdl)
+{
+    assert(phdl);
+    if (*phdl) sioctl_close(*phdl);
+}
+
+enum { MAX_CHANNEL_NUM = 8 };
+
+typedef struct FFSoundDeviceBundle
+{
+    char name[SIOCTL_DISPLAYMAX];
+    double level[MAX_CHANNEL_NUM];
+    uint8_t iLevel;
+    bool mute[MAX_CHANNEL_NUM];
+    uint8_t iMute;
+} FFSoundDeviceBundle;
+
+static void enumerate_props(FFSoundDeviceBundle* bundle, struct sioctl_desc* desc, int val)
+{
+    if (!desc) return;
+
+    if (desc->type == SIOCTL_SEL)
+    {
+        if (desc->display[0] != '\0' && ffStrEquals(desc->node0.name, "server"))
+            ffStrCopy(bundle->name, desc->display, SIOCTL_DISPLAYMAX);
+        return;
+    }
+
+    if (desc->type != SIOCTL_NUM && desc->type != SIOCTL_SW)
+        return;
+
+    if (!ffStrEquals(desc->node0.name, "output"))
+        return;
+
+    if (ffStrEquals(desc->func, "level"))
+    {
+        if (__builtin_expect(bundle->iLevel == MAX_CHANNEL_NUM, false))
+            return;
+        bundle->level[bundle->iLevel] = (double) val / (double) desc->maxval;
+        ++bundle->iLevel;
+    }
+    else if (ffStrEquals(desc->func, "mute"))
+    {
+        if (__builtin_expect(bundle->iMute == MAX_CHANNEL_NUM, false))
+            return;
+        bundle->mute[bundle->iMute] = !!val;
+        ++bundle->iMute;
+    }
+}
+
+const char* ffDetectSound(FFlist* devices)
+{
+    __attribute__((__cleanup__(close_hdl))) struct sioctl_hdl* hdl = sioctl_open(SIO_DEVANY, SIOCTL_READ, 0);
+    if (!hdl) return "sio_open() failed";
+
+    FFSoundDeviceBundle bundle = {};
+    if (sioctl_ondesc(hdl, (void*) enumerate_props, &bundle) == 0)
+        return "sioctl_ondesc() failed";
+
+    if (bundle.iLevel != bundle.iMute || bundle.iLevel == 0)
+        return "Unexpecd sioctl_ondesc() result";
+
+    FFSoundDevice* device = ffListAdd(devices);
+    ffStrbufInitS(&device->name, bundle.name);
+    ffStrbufInitS(&device->identifier, SIO_DEVANY);
+    ffStrbufInitStatic(&device->platformApi, "sndio");
+    device->active = true;
+    device->main = true;
+    device->volume = 0;
+
+    double totalLevel = 0;
+    for (uint8_t i = 0; i < bundle.iLevel; ++i)
+    {
+        if (!bundle.mute[i])
+            totalLevel += bundle.level[i];
+    }
+    device->volume = (uint8_t) (totalLevel * 100 / bundle.iLevel);
+
+    return NULL;
+}