build: add bindings for zig

Author: deevus

.gitignore

@@ -32,3 +32,7 @@ Thumbs.db
 # config files
 include/config.h
 wildmidi.pc
+
+# Zig
+zig-out/
+zig-cache/

build.zig

@@ -0,0 +1,82 @@
+const std = @import("std");
+const LibExeObjStep = std.build.LibExeObjStep;
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    const lib = b.addStaticLibrary(.{
+        .name = "wildmidi",
+        .root_source_file = .{ .path = "include/wildmidi_lib.h" },
+        .target = target,
+        .optimize = optimize,
+    });
+
+    lib.linkLibC();
+    lib.addIncludePath("include");
+
+    const sourceFiles = .{
+        "src/wm_error.c",
+        "src/file_io.c",
+        "src/lock.c",
+        "src/wildmidi_lib.c",
+        "src/reverb.c",
+        "src/gus_pat.c",
+        "src/internal_midi.c",
+        "src/patches.c",
+        "src/f_xmidi.c",
+        "src/f_mus.c",
+        "src/f_hmp.c",
+        "src/f_hmi.c",
+        "src/f_midi.c",
+        "src/sample.c",
+        "src/mus2mid.c",
+        "src/xmi2mid.c",
+    };
+
+    const defaultFlags = .{
+        "-Wall",
+        "-W",
+        "-fno-common",
+        "-DWILDMIDI_BUILD",
+        "-g",
+    };
+
+    const config_header = b.addConfigHeader(.{ .style = .{
+        .cmake = .{ .path = "include/config.h.cmake" },
+    } }, .{
+        .HAVE_C_INLINE = 1,
+        .HAVE_C___INLINE = 1,
+        .HAVE_C___INLINE__ = 1,
+        .HAVE___BUILTIN_EXPECT = 1,
+        .HAVE_STDINT_H = 1,
+        .HAVE_INTTYPES_H = 1,
+        .WORDS_BIGENDIAN = null,
+        .WILDMIDI_AMIGA = null,
+        .HAVE_SYS_SOUNDCARD_H = null,
+        .AUDIODRV_ALSA = null,
+        .AUDIODRV_OSS = null,
+        .AUDIODRV_AHI = null,
+        .AUDIODRV_OPENAL = null,
+    });
+
+    lib.addConfigHeader(config_header);
+
+    switch (lib.target.toTarget().os.tag) {
+        .windows => {
+            lib.addCSourceFiles(&sourceFiles, &(.{"-DWILDMIDI_STATIC"} ++ defaultFlags));
+            lib.addIncludePath("mingw");
+        },
+        .macos => {
+            lib.addCSourceFiles(&sourceFiles, &defaultFlags);
+            lib.addIncludePath("macosx");
+        },
+        else => {
+            lib.addCSourceFiles(&sourceFiles, &defaultFlags);
+        },
+    }
+
+    b.installArtifact(lib);
+
+    _ = b.addModule("wildmidi", .{ .source_file = .{ .path = "./lib-wildmidi.zig" } });
+}

lib-wildmidi.zig

@@ -0,0 +1,87 @@
+const std = @import("std");
+
+pub fn Init(config_file: [*c]const u8, rate: u16, options: InitOptions) c_int {
+    return WildMidi_Init(config_file, rate, options);
+}
+
+pub fn GetVersion() c_long {
+    return WildMidi_GetVersion();
+}
+
+pub const MidiFile = struct {
+    handle: [*c]c_long,
+
+    pub fn getOutput(self: MidiFile, buffer: [*c]u8, size: usize) c_int {
+        return WildMidi_GetOutput(self.handle, buffer, size);
+    }
+
+    pub fn getInfo(self: MidiFile) *WildMidiInfo {
+        return WildMidi_GetInfo(self.handle);
+    }
+
+    pub fn setOption(self: MidiFile, options: c_uint, setting: c_uint) c_int {
+        return WildMidi_SetOption(self.handle, options, setting);
+    }
+
+    pub fn close(self: MidiFile) void {
+        _ = WildMidi_Close(self.handle);
+    }
+};
+
+pub fn Open(midi_file: []const u8) !MidiFile {
+    const midi_file_terminated = try std.mem.concat(std.heap.c_allocator, u8, &.{ midi_file, "\x00" });
+    defer std.heap.c_allocator.free(midi_file_terminated);
+
+    const handle = WildMidi_Open(@ptrCast([*c]const u8, midi_file_terminated));
+
+    return MidiFile{
+        .handle = handle,
+    };
+}
+
+pub fn OpenBuffer(midi_buffer: [*c]const u8, size: c_uint) MidiFile {
+    const handle = WildMidi_OpenBuffer(midi_buffer, size);
+
+    return MidiFile{
+        .handle = handle,
+    };
+}
+
+pub fn GetError() [*c]u8 {
+    return WildMidi_GetError();
+}
+
+pub fn MasterVolume(master_volume: c_short) c_int {
+    return WildMidi_MasterVolume(master_volume);
+}
+
+pub const InitOptions = enum(c_uint) {
+    Default = 0x0,
+    LogVolume = 0x1,
+    EnhancedResampling = 0x2,
+    Reverb = 0x4,
+    Loop = 0x8,
+    SaveAsType0 = 0x1000,
+    RoundTempo = 0x2000,
+    StripSilence = 0x4000,
+    TextAsLyric = 0x8000,
+};
+
+pub const WildMidiInfo = extern struct {
+    copyright: [*c]u8,
+    current_sample: c_uint,
+    approx_total_samples: c_uint,
+    mixer_options: c_ushort,
+    total_midi_time: c_uint,
+};
+
+extern fn WildMidi_Init(config_file: [*c]const u8, rate: u16, options: InitOptions) c_int;
+extern fn WildMidi_GetVersion() c_long;
+extern fn WildMidi_Open(midi_file: [*c]const u8) [*c]c_long;
+extern fn WildMidi_OpenBuffer(midi_buffer: [*c]const u8, size: c_uint) [*c]c_long;
+extern fn WildMidi_Close(handle: [*]c_long) c_int;
+extern fn WildMidi_GetOutput(handle: [*c]c_long, buffer: [*c]u8, size: usize) c_int;
+extern fn WildMidi_GetInfo(handle: [*]c_long) [*c]WildMidiInfo;
+extern fn WildMidi_GetError() [*c]u8;
+extern fn WildMidi_MasterVolume(master_volume: c_short) c_int;
+extern fn WildMidi_SetOption(handle: [*]c_long, options: c_uint, setting: c_uint) c_int;