Imported Upstream version 4.2-build2006upstream/4.2-build2006upstream

1 files changed, 109 insertions, 0 deletions

diff --git a/kernel/framework/midi/oss_midi_mapper.c b/kernel/framework/midi/oss_midi_mapper.c
new file mode 100644
index 0000000..e99d579
--- /dev/null
+++ b/kernel/framework/midi/oss_midi_mapper.c
@@ -0,0 +1,109 @@
+/*
+ * Purpose: MIDI device mapper
+ *
+ * This code is used to bind applications using /dev/mixer to the actual
+ * MIDI input and output ports.
+ */
+/*
+ *
+ * This file is part of Open Sound System.
+ *
+ * Copyright (C) 4Front Technologies 1996-2008.
+ *
+ * This this source file is released under GPL v2 license (no other versions).
+ * See the COPYING file included in the main directory of this source
+ * distribution for the license terms and conditions.
+ *
+ */
+
+#include "oss_config.h"
+#include "midi_core.h"
+
+extern oss_mutex_t midi_mutex;
+
+void
+midi_mapper_init (oss_device_t * osdev)
+{
+}
+
+void
+midi_mapper_uninit (void)
+{
+}
+
+int
+midi_mapper_autobind (int client_dev, int mode)
+{
+  int dev;
+  oss_midi_client_t *client = oss_midi_clients[client_dev];
+
+  cmn_err (CE_CONT, "MIDI autobind %d\n", client_dev);
+
+  for (dev = 0; dev < num_mididevs; dev++)
+    {
+      int err;
+
+      if (midi_devs[dev]->open_mode)	/* Busy */
+	continue;
+
+      if ((mode & OPEN_WRITE) && !(midi_devs[dev]->flags & MFLAG_OUTPUT))
+	continue;
+
+      if ((mode == OPEN_READ) && !(midi_devs[dev]->flags & MFLAG_INPUT))
+	continue;
+
+      if ((err = midi_devs[dev]->d->open (dev, client->open_mode,
+					  oss_midi_input_byte,
+					  oss_midi_input_buf,
+					  oss_midi_output_intr)) < 0)
+	{
+	  /* The device seems to think it's busy */
+	  continue;
+	}
+
+      if (midi_devs[dev]->open_mode == 0)	/* Not busy */
+	{
+
+	  midi_devs[dev]->open_mode = mode;
+	  client->mididev = midi_devs[dev];
+
+	  if (mode & OPEN_READ)
+	    {
+	      client->mididev->in_queue =
+		midi_queue_alloc (client->mididev->osdev, "qread");
+	      if (client->mididev->in_queue == NULL)
+		{
+		  cmn_err (CE_WARN,
+			   "Failed to allocate MIDI input queue(2)\n");
+		  midi_devs[dev]->d->close (dev, mode);
+		  midi_devs[dev]->open_mode = 0;
+		  return OSS_ENOMEM;
+
+		}
+	    }
+
+	  if (mode & OPEN_WRITE)
+	    {
+	      client->mididev->out_queue =
+		midi_queue_alloc (client->mididev->osdev, "qwrite");
+	      if (client->mididev->out_queue == NULL)
+		{
+		  cmn_err (CE_WARN,
+			   "Failed to allocate MIDI output queue(2)\n");
+		  midi_devs[dev]->d->close (dev, mode);
+		  midi_devs[dev]->open_mode = 0;
+		  return OSS_ENOMEM;
+
+		}
+	    }
+
+	  oss_midi_set_defaults (client->mididev);
+
+	  cmn_err (CE_CONT, "Bound to %d/%s\n", dev, midi_devs[dev]->name);
+	  return dev;
+
+	}
+    }
+
+  return OSS_EBUSY;
+}