1 files changed, 218 insertions, 0 deletions

diff --git a/apps/iap/iap-lingo1.c b/apps/iap/iap-lingo1.c
new file mode 100644
index 0000000000..5702500f23
--- /dev/null
+++ b/apps/iap/iap-lingo1.c
@@ -0,0 +1,218 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Alan Korr & Nick Robinson
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+/* Lingo 0x01: Microphone Lingo
+ */
+
+#include "iap-core.h"
+#include "iap-lingo.h"
+
+/*
+ * This macro is meant to be used inside an IAP mode message handler.
+ * It is passed the expected minimum length of the message buffer.
+ * If the buffer does not have the required lenght an ACK
+ * packet with a Bad Parameter error is generated.
+ */
+#define CHECKLEN(x) do { \
+        if (len < (x)) { \
+            cmd_ack(cmd, IAP_ACK_BAD_PARAM); \
+            return; \
+        }} while(0)
+
+/* Check for authenticated state, and return an ACK Not
+ * Authenticated on failure.
+ */
+#define CHECKAUTH do { \
+        if (!DEVICE_AUTHENTICATED) { \
+            cmd_ack(cmd, IAP_ACK_NO_AUTHEN); \
+            return; \
+        }} while(0)
+
+static void cmd_ack(const unsigned char cmd, const unsigned char status)
+{
+    IAP_TX_INIT(0x03, 0x00);
+    IAP_TX_PUT(status);
+    IAP_TX_PUT(cmd);
+
+    iap_send_tx();
+}
+
+/* returns record status */
+bool iap_record(bool onoff)
+{
+    if (!DEVICE_LINGO_SUPPORTED(0x01))
+        return false;
+
+    /* iPodModeChange */
+    IAP_TX_INIT(0x01, 0x06);
+    IAP_TX_PUT(onoff ? 0x00 : 0x01);
+    iap_send_tx();
+
+    return onoff;
+}
+
+void iap_handlepkt_mode1(const unsigned int len, const unsigned char *buf)
+{
+    unsigned int cmd = buf[1];
+
+    /* Lingo 0x04 commands are at least 4 bytes in length */
+    CHECKLEN(4);
+
+    /* Lingo 0x01 must have been negotiated */
+    if (!DEVICE_LINGO_SUPPORTED(0x01)) {
+        cmd_ack(cmd, IAP_ACK_BAD_PARAM);
+        return;
+    }
+
+    /* Authentication required for all commands */
+    CHECKAUTH;
+
+    switch (cmd)
+    {
+        /* BeginRecord (0x00) Deprecated
+         *
+         * Sent from the iPod to the device
+         */
+
+        /* EndRecord (0x01) Deprecated
+         *
+         * Sent from the iPod to the device
+         */
+
+        /* BeginPlayback (0x02) Deprecated
+         *
+         * Sent from the iPod to the device
+         */
+
+        /* EndPlayback (0x03) Deprecated
+         *
+         * Sent from the iPod to the device
+         */
+
+        /* ACK (0x04)
+         *
+         * The device sends an ACK response when a command
+         * that does not return any data has completed.
+         *
+         * Packet format (offset in buf[]: Description)
+         * 0x00: Lingo ID: Microphone Lingo, always 0x01
+         * 0x01: Command, always 0x04
+         * 0x02: The command result status
+         * 0x03: The ID of the command for which the
+         *       response is being sent
+         *
+         * Returns: (none)
+         */
+        case 0x04:
+#ifdef LOGF_ENABLE
+            if (buf[2] != 0x00)
+                logf("iap: Mode1 Command ACK error: "
+                            "0x%02x 0x%02x", buf[2], buf[3]);
+#endif
+            break;
+
+        /* GetDevAck (0x05)
+         *
+         * Sent from the iPod to the device
+         */
+
+        /* iPodModeChange (0x06)
+         *
+         * Sent from the iPod to the device
+         */
+
+        /* GetDevCaps (0x07)
+         *
+         * Sent from the iPod to the device
+         */
+
+        /* RetDevCaps (0x08)
+         *
+         * The microphone device returns the payload
+         * indicating which capabilities it supports.
+         *
+         * Packet format (offset in buf[]: Description)
+         * 0x00: Lingo ID: Microphone Lingo, always 0x01
+         * 0x01: Command, always 0x08
+         * 0x02: Device capabilities (bits 31:24)
+         * 0x03: Device capabilities (bits 23:16)
+         * 0x04: Device capabilities (bits 15:8)
+         * 0x05: Device capabilities (bits 7:0)
+         *
+         * Returns:
+         * SetDevCtrl, sets stereo line input when supported
+         */
+        case 0x08:
+            CHECKLEN(6);
+
+            if ((buf[5] & 3) == 3) {
+                /* SetDevCtrl, set stereo line-in */
+                IAP_TX_INIT(0x01, 0x0B);
+                IAP_TX_PUT(0x01);
+                IAP_TX_PUT(0x01);
+
+                iap_send_tx();
+            }
+
+            /* TODO?: configure recording level/limiter controls
+               when supported by the device */
+
+            break;
+
+        /* GetDevCtrl (0x09)
+         *
+         * Sent from the iPod to the device
+         */
+
+        /* RetDevCaps (0x0A)
+         *
+         * The device returns the current control state
+         * for the specified control type.
+         *
+         * Packet format (offset in buf[]: Description)
+         * 0x00: Lingo ID: Microphone Lingo, always 0x01
+         * 0x01: Command, always 0x0A
+         * 0x02: The control type
+         * 0x03: The control data
+         */
+        case 0x0A:
+            switch (buf[2])
+            {
+                case 0x01:  /* stereo/mono line-in control */
+                case 0x02:  /* recording level control */
+                case 0x03:  /* recording level limiter control */
+                    break;
+            }
+            break;
+
+        /* SetDevCtrl (0x0B)
+         *
+         * Sent from the iPod to the device
+         */
+
+        /* The default response is IAP_ACK_BAD_PARAM */
+        default:
+        {
+#ifdef LOGF_ENABLE
+            logf("iap: Unsupported Mode1 Command");
+#endif
+            break;
+        }
+    }
+}