Move process thread setup code to a separate file

Towards more cleanly separating the audio thread code from the rest of the
application.

1 files changed, 46 insertions, 0 deletions

diff --git a/src/process_setup.c b/src/process_setup.c
new file mode 100644
index 0000000..3f64d02
--- /dev/null
+++ b/src/process_setup.c
@@ -0,0 +1,46 @@
+// Copyright 2016-2024 David Robillard <d@drobilla.net>
+// SPDX-License-Identifier: ISC
+
+#include "process_setup.h"
+
+#include "jalv.h"
+#include "lv2_evbuf.h"
+#include "port.h"
+#include "types.h"
+#include "urids.h"
+
+#include <lilv/lilv.h>
+
+#include <stddef.h>
+#include <stdint.h>
+
+void
+jalv_allocate_port_buffers(Jalv* const jalv)
+{
+  const JalvURIDs* const urids = &jalv->urids;
+
+  for (uint32_t i = 0; i < jalv->num_ports; ++i) {
+    JalvPort* const port = &jalv->ports[i];
+    if (port->type == TYPE_EVENT) {
+      const size_t size =
+        port->buf_size ? port->buf_size : jalv->settings.midi_buf_size;
+
+      lv2_evbuf_free(port->evbuf);
+      port->evbuf =
+        lv2_evbuf_new(size, urids->atom_Chunk, urids->atom_Sequence);
+
+      lv2_evbuf_reset(port->evbuf, port->flow == FLOW_INPUT);
+      lilv_instance_connect_port(
+        jalv->instance, i, lv2_evbuf_get_buffer(port->evbuf));
+    }
+  }
+}
+
+void
+jalv_free_port_buffers(Jalv* const jalv)
+{
+  for (uint32_t i = 0; i < jalv->num_ports; ++i) {
+    lv2_evbuf_free(jalv->ports[i].evbuf);
+    lilv_instance_connect_port(jalv->instance, i, NULL);
+  }
+}