Add FS #10214. Initial commit of the original PDa code for the GSoC Pure Data plugin project of Wincent Balin. Stripped some non-sourcefiles and added a rockbox readme that needs a bit more info from Wincent. Is added to CATEGORIES and viewers, but not yet to SUBDIRS (ie doesn't build yet)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21044 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 238 insertions, 0 deletions

diff --git a/apps/plugins/pdbox/pdbox-net.c b/apps/plugins/pdbox/pdbox-net.c
new file mode 100644
index 0000000000..5767226de3
--- /dev/null
+++ b/apps/plugins/pdbox/pdbox-net.c
@@ -0,0 +1,238 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2009 Wincent Balin
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "plugin.h"
+#include "pdbox.h"
+
+/* Datagram pool will contains 16 datagrams. */
+#define MAX_DATAGRAMS 16
+
+/* Datagram pool. */
+struct datagram datagrams[MAX_DATAGRAMS];
+
+/* UDP message queues. */
+struct event_queue gui_to_core;
+struct event_queue core_to_gui;
+
+/* Initialize net infrastructure. */
+void net_init(void)
+{
+    unsigned int i;
+
+    /* Initialize message pool. */
+    for(i = 0; i < MAX_DATAGRAMS; i++)
+        datagrams[i].used = false;
+
+    /* Initialize and register message queues. */
+    rb->queue_init(&gui_to_core, true);
+    rb->queue_init(&core_to_gui, true);
+}
+
+/* Send datagram. */
+bool send_datagram(struct event_queue* route,
+                   int port,
+                   char* data,
+                   size_t size)
+{
+    unsigned int i;
+
+    /* If datagram too long, abort. */
+    if(size > MAX_DATAGRAM_SIZE)
+        return false;
+
+    /* Find free datagram buffer. */
+    for(i = 0; i < MAX_DATAGRAMS; i++)
+        if(!datagrams[i].used)
+            break;
+
+    /* If no free buffer found, abort. */
+    if(i == MAX_DATAGRAMS)
+        return false;
+
+    /* Copy datagram to the buffer. */
+    rb->memcpy(datagrams[i].data, data, size);
+    datagrams[i].size = size;
+
+    /* Mark datagram buffer as used. */
+    datagrams[i].used = true;
+
+    /* Send event via route. */
+    rb->queue_post(route, port, (intptr_t) &datagrams[i]);
+
+    /* Everything went ok. */
+    return true;
+}
+
+/* Receive datagram. */
+bool receive_datagram(struct event_queue* route,
+                      int port,
+                      struct datagram* buffer)
+{
+    struct queue_event event;
+
+    /* If route queue empty, abort. */
+    if(rb->queue_empty(route))
+        return false;
+
+    /* Receive event. */
+    rb->queue_wait(route, &event);
+
+    /* If wrong port, abort.
+       NOTE: Event is removed from the queue in any case! */
+    if(event.id != port)
+        return false;
+
+    /* Copy datagram. */
+    rb->memcpy(buffer, (struct datagram*) event.data, sizeof(struct datagram));
+
+    /* Free datagram buffer. */
+    ((struct datagram*) event.data)->used = false;
+
+    /* Everything went ok. */
+    return true;
+}
+
+/* Destroy net infrastructure. */
+void net_destroy(void)
+{
+    /* Remove message queues. */
+    rb->queue_delete(&gui_to_core);
+    rb->queue_delete(&core_to_gui);
+}
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2009 Wincent Balin
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "plugin.h"
+#include "pdbox.h"
+
+/* Datagram pool will contains 16 datagrams. */
+#define MAX_DATAGRAMS 16
+
+/* Datagram pool. */
+struct datagram datagrams[MAX_DATAGRAMS];
+
+/* UDP message queues. */
+struct event_queue gui_to_core;
+struct event_queue core_to_gui;
+
+/* Initialize net infrastructure. */
+void net_init(void)
+{
+    unsigned int i;
+
+    /* Initialize message pool. */
+    for(i = 0; i < MAX_DATAGRAMS; i++)
+        datagrams[i].used = false;
+
+    /* Initialize and register message queues. */
+    rb->queue_init(&gui_to_core, true);
+    rb->queue_init(&core_to_gui, true);
+}
+
+/* Send datagram. */
+bool send_datagram(struct event_queue* route,
+                   int port,
+                   char* data,
+                   size_t size)
+{
+    unsigned int i;
+
+    /* If datagram too long, abort. */
+    if(size > MAX_DATAGRAM_SIZE)
+        return false;
+
+    /* Find free datagram buffer. */
+    for(i = 0; i < MAX_DATAGRAMS; i++)
+        if(!datagrams[i].used)
+            break;
+
+    /* If no free buffer found, abort. */
+    if(i == MAX_DATAGRAMS)
+        return false;
+
+    /* Copy datagram to the buffer. */
+    rb->memcpy(datagrams[i].data, data, size);
+    datagrams[i].size = size;
+
+    /* Mark datagram buffer as used. */
+    datagrams[i].used = true;
+
+    /* Send event via route. */
+    rb->queue_post(route, port, (intptr_t) &datagrams[i]);
+
+    /* Everything went ok. */
+    return true;
+}
+
+/* Receive datagram. */
+bool receive_datagram(struct event_queue* route,
+                      int port,
+                      struct datagram* buffer)
+{
+    struct queue_event event;
+
+    /* If route queue empty, abort. */
+    if(rb->queue_empty(route))
+        return false;
+
+    /* Receive event. */
+    rb->queue_wait(route, &event);
+
+    /* If wrong port, abort.
+       NOTE: Event is removed from the queue in any case! */
+    if(event.id != port)
+        return false;
+
+    /* Copy datagram. */
+    rb->memcpy(buffer, (struct datagram*) event.data, sizeof(struct datagram));
+
+    /* Free datagram buffer. */
+    ((struct datagram*) event.data)->used = false;
+
+    /* Everything went ok. */
+    return true;
+}
+
+/* Destroy net infrastructure. */
+void net_destroy(void)
+{
+    /* Remove message queues. */
+    rb->queue_delete(&gui_to_core);
+    rb->queue_delete(&core_to_gui);
+}