From f222c5e34f0046a8eda01a3e14eed7e31a2398ea Mon Sep 17 00:00:00 2001
From: Luna <git@l4.pm>
Date: Sun, 7 Jul 2019 15:54:38 -0300
Subject: [PATCH] fix ports, fix c-str for params

---
 src/main.zig | 28 ++++++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/src/main.zig b/src/main.zig
index d66ecf5..36f87ef 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -90,7 +90,7 @@ const PortType = enum {
 
 /// Runtime port information.
 const Port = struct {
-    lilv_port: *const c.LilvPort,
+    lilv_port: ?*const c.LilvPort,
     ptype: PortType,
     index: u32,
     value: f32,
@@ -146,6 +146,20 @@ const LV2Apply = struct {
 
         self.ports = try self.allocator.realloc(self.ports, n_ports);
 
+        for (self.ports) |port_ptr, idx| {
+            var port = try self.allocator.create(Port);
+            port.* = Port{
+                .lilv_port = null,
+                .ptype = .Control,
+                .index = f32(0),
+                .value = f32(0),
+                .is_input = false,
+                .optional = false,
+            };
+
+            self.ports[idx] = port;
+        }
+
         var values: []f32 = try self.allocator.alloc(f32, n_ports);
         defer self.allocator.free(values);
 
@@ -176,10 +190,12 @@ const LV2Apply = struct {
         var i: u32 = 0;
         while (i < n_ports) : (i += 1) {
             var port: *Port = self.ports[i];
+
             const lport = c.lilv_plugin_get_port_by_index(self.plugin, i).?;
 
             port.lilv_port = lport;
             port.index = i;
+
             if (std.math.isNan(values[i])) {
                 port.value = f32(0);
             } else {
@@ -387,13 +403,13 @@ pub fn main() !void {
     var it = self.params.iterator();
 
     while (it.next()) |param| {
-        var sym = c.lilv_new_string(self.world, param.sym.ptr);
-        const port = c.lilv_plugin_get_port_by_symbol(self.plugin, sym);
+        var param_sym = try self.makeCStr(param.sym);
+        var sym = c.lilv_new_string(self.world, param_sym.ptr);
+        const port = c.lilv_plugin_get_port_by_symbol(self.plugin, sym).?;
         c.lilv_node_free(sym);
 
-        std.debug.warn("param control: set {} to {}\n", param.sym, param.value);
-
-        self.ports[c.lilv_port_get_index(self.plugin, port)].value = param.value;
+        var idx = c.lilv_port_get_index(self.plugin, port);
+        self.ports[idx].value = param.value;
     }
 
     var out_fmt = c.SF_INFO{