From 662ef7983bd6f8685d0776f331c722c41bda2321 Mon Sep 17 00:00:00 2001
From: JP Cimalando <jp-dev@inbox.ru>
Date: Tue, 22 Nov 2016 20:53:13 +0100
Subject: [PATCH] add Jack option to leave ports unconnected

---
 soundio/soundio.h | 12 ++++++++++++
 src/jack.c        | 40 ++++++++++++++++++++++------------------
 2 files changed, 34 insertions(+), 18 deletions(-)

diff --git a/soundio/soundio.h b/soundio/soundio.h
index 9890ba6..093dd9c 100644
--- a/soundio/soundio.h
+++ b/soundio/soundio.h
@@ -608,6 +608,12 @@ struct SoundIoOutStream {
     /// to an error code. Possible error codes are:
     /// * #SoundIoErrorIncompatibleDevice
     enum SoundIoError layout_error;
+
+    /// Optional: Whether to leave the software outputs unconnected.
+    /// If this is set to `true`, JACK will not immediately connect the output
+    /// of this stream to the output ports of the sound card.
+    /// Defaults to `false`.
+    bool unconnected;
 };
 
 /// The size of this struct is not part of the API or ABI.
@@ -690,6 +696,12 @@ struct SoundIoInStream {
     /// If setting the channel layout fails for some reason, this field is set
     /// to an error code. Possible error codes are: #SoundIoErrorIncompatibleDevice
     enum SoundIoError layout_error;
+
+    /// Optional: Whether to leave the software inputs unconnected.
+    /// If this is set to `true`, JACK will not immediately connect the input
+    /// of this stream to the input ports of the sound card.
+    /// Defaults to `false`.
+    bool unconnected;
 };
 
 /// See also ::soundio_version_major, ::soundio_version_minor, ::soundio_version_patch
diff --git a/src/jack.c b/src/jack.c
index fff441f..9ff0603 100644
--- a/src/jack.c
+++ b/src/jack.c
@@ -542,15 +542,17 @@ static enum SoundIoError outstream_start_jack(struct SoundIoPrivate *si, struct
     if ((err = jack_activate(osj->client)))
         return SoundIoErrorStreaming;
 
-    for (int ch = 0; ch < outstream->layout.channel_count; ch += 1) {
-        struct SoundIoOutStreamJackPort *osjp = &osj->ports[ch];
-        const char *dest_port_name = osjp->dest_port_name;
-        // allow unconnected ports
-        if (!dest_port_name)
-            continue;
-        const char *source_port_name = jack_port_name(osjp->source_port);
-        if ((err = jack_connect(osj->client, source_port_name, dest_port_name)))
-            return SoundIoErrorStreaming;
+    if (!outstream->unconnected) {
+        for (int ch = 0; ch < outstream->layout.channel_count; ch += 1) {
+            struct SoundIoOutStreamJackPort *osjp = &osj->ports[ch];
+            const char *dest_port_name = osjp->dest_port_name;
+            // allow unconnected ports
+            if (!dest_port_name)
+                continue;
+            const char *source_port_name = jack_port_name(osjp->source_port);
+            if ((err = jack_connect(osj->client, source_port_name, dest_port_name)))
+                return SoundIoErrorStreaming;
+        }
     }
 
     return 0;
@@ -762,15 +764,17 @@ static enum SoundIoError instream_start_jack(struct SoundIoPrivate *si, struct S
     if ((err = jack_activate(isj->client)))
         return SoundIoErrorStreaming;
 
-    for (int ch = 0; ch < instream->layout.channel_count; ch += 1) {
-        struct SoundIoInStreamJackPort *isjp = &isj->ports[ch];
-        const char *source_port_name = isjp->source_port_name;
-        // allow unconnected ports
-        if (!source_port_name)
-            continue;
-        const char *dest_port_name = jack_port_name(isjp->dest_port);
-        if ((err = jack_connect(isj->client, source_port_name, dest_port_name)))
-            return SoundIoErrorStreaming;
+    if (!instream->unconnected) {
+        for (int ch = 0; ch < instream->layout.channel_count; ch += 1) {
+            struct SoundIoInStreamJackPort *isjp = &isj->ports[ch];
+            const char *source_port_name = isjp->source_port_name;
+            // allow unconnected ports
+            if (!source_port_name)
+                continue;
+            const char *dest_port_name = jack_port_name(isjp->dest_port);
+            if ((err = jack_connect(isj->client, source_port_name, dest_port_name)))
+                return SoundIoErrorStreaming;
+        }
     }
 
     return 0;