From aedf47dbe112d1bcfd320be854b6d9a642aaa26a Mon Sep 17 00:00:00 2001
From: Luna <git@l4.pm>
Date: Sat, 13 Jul 2019 17:20:14 -0300
Subject: [PATCH] add revdelay cmd

---
 doc/README.md          |  9 +++++++++
 examples/revdelay.scri |  3 +++
 src/lang.zig           |  2 ++
 src/runner.zig         | 17 +++++++++++++++++
 4 files changed, 31 insertions(+)
 create mode 100644 examples/revdelay.scri

diff --git a/doc/README.md b/doc/README.md
index 6ab542d..7a34553 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -129,6 +129,15 @@ Parameters:
  - `click`: Crackle, 0..1, default 0
  - `wear`: Wear, 0..1, default 0
 
+## `revdelay split index delay_time dry_level wet_level feedback xfade_samp` 
+
+Parameters:
+ - `delay_time`: Delay time (s), 0..5, default 0
+ - `dry_level`: Dry Level (dB), -70..0, default 0
+ - `wet_level`: Wet Level (dB), -70..0, default 0,
+ - `feedback`: Feedback, 0..1, default 0
+ - `xfade_samp`: Crossfade samples (int), 0..5000, default 1250
+
 ## TODO `echo split index delay`
 
 Run an echo filter on the given loaded file.
diff --git a/examples/revdelay.scri b/examples/revdelay.scri
new file mode 100644
index 0000000..48827b1
--- /dev/null
+++ b/examples/revdelay.scri
@@ -0,0 +1,3 @@
+load :0;
+revdelay 3 1 0 0 0 0 1250;
+quicksave;
diff --git a/src/lang.zig b/src/lang.zig
index bacb55a..0c38a93 100644
--- a/src/lang.zig
+++ b/src/lang.zig
@@ -25,6 +25,7 @@ pub const CommandType = enum {
     Highpass,
     Delay,
     Vinyl,
+    RevDelay,
 };
 
 pub const Command = struct {
@@ -141,6 +142,7 @@ pub const Lang = struct {
         _ = try self.keywords.put("highpass", .Highpass);
         _ = try self.keywords.put("delay", .Delay);
         _ = try self.keywords.put("vinyl", .Vinyl);
+        _ = try self.keywords.put("revdelay", .RevDelay);
     }
 
     pub fn parse(self: *Lang, data: []const u8) !CommandList {
diff --git a/src/runner.zig b/src/runner.zig
index 0ebc0eb..5632dca 100644
--- a/src/runner.zig
+++ b/src/runner.zig
@@ -240,6 +240,11 @@ pub const Runner = struct {
         try image.runPlugin("http://plugin.org.uk/swh-plugins/vynil", pos, params);
     }
 
+    fn revDelayCmd(self: *Runner, pos: Position, params: ParamList) !void {
+        var image = try self.getImage();
+        try image.runPlugin("http://plugin.org.uk/swh-plugins/revdelay", pos, params);
+    }
+
     fn runCommand(self: *Runner, cmd: *lang.Command) !void {
         var params = ParamList.init(self.allocator);
         defer params.deinit();
@@ -367,6 +372,18 @@ pub const Runner = struct {
                 try self.vinylCmd(pos, params);
             },
 
+            .RevDelay => blk: {
+                const pos = try cmd.consumePosition();
+
+                try cmd.appendParam(&params, "delay_time");
+                try cmd.appendParam(&params, "dry_level");
+                try cmd.appendParam(&params, "wet_level");
+                try cmd.appendParam(&params, "feedback");
+                try cmd.appendParam(&params, "xfade_samp");
+
+                try self.revDelayCmd(pos, params);
+            },
+
             else => blk: {
                 std.debug.warn("Unsupported command: {}\n", cmd.command);
                 break :blk RunError.UnknownCommand;