listening some muzak

3 files changed, 56 insertions, 4 deletions

diff --git a/build.zig b/build.zig
index 94ee88f..def28a5 100644
--- a/build.zig
+++ b/build.zig
@@ -25,6 +25,8 @@ pub fn build(b: *std.Build) void {
     // linking for linux only
     // TODO: link for mac later
     exe.linkSystemLibrary("SDL2");
+    exe.linkSystemLibrary("mpg123");
+    exe.linkSystemLibrary("alsa");
     exe.linkLibC();
     // This declares intent for the executable to be installed into the
     // standard location when the user invokes the "install" step (the default
diff --git a/src/brr.zig b/src/brr.zig
index e69de29..aad554d 100644
--- a/src/brr.zig
+++ b/src/brr.zig
@@ -0,0 +1,50 @@
+const std = @import("std");
+const c = @cImport({
+    @cInclude("mpg123.h");
+    @cInclude("alsa/asoundlib.h");
+});
+
+pub fn brr(file: []const u8) void {
+    _ = c.mpg123_init();
+
+    const handle = c.mpg123_new(null, null) orelse {
+        std.log.warn("Failed to create mpg123 handle\n", .{});
+        return;
+    };
+    defer c.mpg123_delete(handle);
+
+    const file_path = file.ptr;
+    if (c.mpg123_open(handle, file_path) != 0) {
+        std.log.warn("Filed to open the file: {}\n", .{file_path});
+        return;
+    }
+
+    var pcm: c.snd_pcm_t = undefined;
+    if (c.snd_pcm_open(&pcm, "default", c.SND_PCM_STREAM_PLAYBACK, 0) < 0) {
+        std.log.warn("Failed to open ALSA device\n", .{});
+        return;
+    }
+    defer c.snd_pcm_close(pcm);
+
+    var params: *c.snd_pcm_hw_params_t = undefined;
+    c.snd_pcm_hw_params_malloc(&params);
+    defer c.snd_pcm_hw_params_free(params);
+
+    c.snd_pcm_hw_params(pcm, params);
+    c.snd_pcm_hw_params_set_access(pcm, params, c.SND_PCM_FORMAT_S16_LE);
+    c.snd_pcm_hw_params_set_channels(pcm, params, 2);
+    c.snd_pcm_hw_params_set_rate(pcm, params, 44100, 0);
+
+    c.snd_pcm_hw_params(pcm, params);
+
+    var buffer: [4096]u8 = undefined;
+
+    while (true) {
+        var done: c.size_t = 0;
+        c.mpg123_read(handle, &buffer[0], buffer.len, &done);
+
+        if (done == 0) break;
+
+        c.snd_pcm_writei(pcm, &buffer[0], done / 4);
+    }
+}
diff --git a/src/main.zig b/src/main.zig
index 5d5f734..498b928 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -2,6 +2,7 @@ const std = @import("std");
 const ls = @import("ls.zig");
 const socket_server = @import("socket-server.zig");
 const sdl_window = @import("sdl-window.zig");
+const brr = @import("brr.zig");
 
 const commands = [_]struct {
     name: []const u8,
@@ -48,7 +49,7 @@ pub fn main() !void {
         return;
     }
 
-    if (args.len == 2) {
+    if (args.len >= 2) {
         var argument = Arg{
             .name = args[1],
         };
@@ -57,9 +58,8 @@ pub fn main() !void {
             .LS => try ls.ls(),
             .TCP => try socket_server.start_server(),
             .WINDOW => try sdl_window.present_sdl_window(),
-            else => {
-                return;
-            },
+            // TODO: parse options for arguments
+            .BRR => try brr.brr(args[2]),
         }
     }