very, very simple WP with midi CC out

2024-10-09 02:01:23 +02:00
commit 3d6fc151f1
126 changed files with 19539 additions and 0 deletions
@@ -0,0 +1,66 @@
+#pragma once
+#include <libremidi/backends/alsa_raw/helpers.hpp>
+#include <libremidi/config.hpp>
+#include <libremidi/detail/observer.hpp>
+
+namespace libremidi::alsa_raw_ump
+{
+struct midi2_enumerator : alsa_raw::enumerator
+{
+  void enumerate_devices(int card) override
+  {
+    char name[128];
+
+    sprintf(name, "hw:%d", card);
+
+    // Open card.
+    alsa_raw::snd_ctl_wrapper ctl{*this, name};
+    if (!ctl)
+      return;
+
+    // Enumerate devices.
+    int device = -1;
+    do
+    {
+      const int status = snd.ctl.ump.next_device(ctl, &device);
+      if (device == -1)
+        return;
+
+      if (status < 0)
+      {
+        error(
+            "alsa_raw_ump::midi2_enumerator::enumerate_devices: "
+            "cannot determine device number: ",
+            snd.strerror(status));
+        break;
+      }
+
+      if (device >= 0)
+      {
+        enumerate_blocks(ctl, card, device);
+        enumerate_endpoints(ctl, card, device);
+      }
+
+    } while (device >= 0);
+  }
+
+  void enumerate_endpoints(snd_ctl_t* ctl, [[maybe_unused]] int card, [[maybe_unused]] int device)
+  {
+    snd_ump_endpoint_info_t* info{};
+    snd_ump_endpoint_info_alloca(&info);
+    snd.ctl.ump.endpoint_info(ctl, info);
+
+    fprintf(stderr, "UMP endpoint: %s", snd.ump.endpoint_info_get_name(info));
+  }
+
+  void enumerate_blocks(snd_ctl_t* ctl, [[maybe_unused]] int card, [[maybe_unused]] int device)
+  {
+    snd_ump_block_info_t* info{};
+    snd_ump_block_info_alloca(&info);
+    snd.ctl.ump.block_info(ctl, info);
+
+    fprintf(stderr, "UMP block: %s", snd.ump.block_info_get_name(info));
+  }
+};
+
+}