1 files changed, 90 insertions, 0 deletions
diff --git a/src/detection/sound/sound_obsd.c b/src/detection/sound/sound_obsd.c
new file mode 100644
index 0000000..a6dd6df
--- /dev/null
+++ b/src/detection/sound/sound_obsd.c
@@ -0,0 +1,90 @@
+#include "sound.h"
+#include "common/strutil.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(FFSoundOptions* options, FFlist* devices) {
+    FF_A_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 "Unexpected sioctl_ondesc() result";
+    }
+
+    FFSoundDevice* device = FF_LIST_ADD(FFSoundDevice, *devices);
+    ffStrbufInitS(&device->name, bundle.name);
+    ffStrbufInitS(&device->identifier, SIO_DEVANY);
+    ffStrbufInitStatic(&device->platformApi, "sndio");
+    device->volume = 0;
+    device->type = FF_SOUND_TYPE_ACTIVE | FF_SOUND_TYPE_MAIN;
+
+    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 / 2) / bundle.iLevel);
+
+    return NULL;
+}