Update to allow the Apple Radio Remote to function on iPod Video 5G.

This was broken when the major update to iap was comitted.
ia-lingo7.c created and various iap related files modified.
On 4G, 6G and Nano 1/2Gen iPods the remote will function
even though the radio won't.
Tested on 4G Greyscale, 4G Color, 4G Photo, 4G Mini 1st Gen,
4G Mini 2Gen, Nano 1G, Nano 2G, Video 5G, Video 5.5G

Change-Id: Ia74e3d07d9ab5edc6da8eafa96801ede722be331

1 files changed, 64 insertions, 51 deletions

diff --git a/apps/iap/iap-core.c b/apps/iap/iap-core.c
index f8373bab83..885ba2c188 100644
--- a/apps/iap/iap-core.c
+++ b/apps/iap/iap-core.c
@@ -45,7 +45,9 @@
 #include "usb.h"
 
 #include "tuner.h"
+#if CONFIG_TUNER
 #include "ipod_remote_tuner.h"
+#endif
 
 
 /* MS_TO_TICKS converts a milisecond time period into the
@@ -164,7 +166,13 @@ unsigned char lingo_versions[32][2] = {
     {1, 5},     /* Display remote lingo, 0x03 */
     {1, 12},    /* Extended Interface lingo, 0x04 */
     {1, 1},     /* RF/BT Transmitter lingo, 0x05 */
-    {}          /* All others are unsupported */
+    {0, 0},     /* USB Host lingo, 0x06, disabled */
+#if CONFIG_TUNER
+    {1, 0},     /* RF Receiver lingo, 0x07 */
+#else
+    {0, 0},     /* RF Receiver lingo, 0x07 disabled */
+#endif
+    {}          /* every other lingo, disabled */
 };
 
 /* states of the iap de-framing state machine */
@@ -308,6 +316,17 @@ static int iap_task(struct timeout *tmo)
     return MS_TO_TICKS(100);
 }
 
+
+void iap_set_remote_volume(void)
+{
+    IAP_TX_INIT(0x03, 0x0D);
+    IAP_TX_PUT(0x04);
+    IAP_TX_PUT(0x00);
+    IAP_TX_PUT(0xFF & (int)((global_settings.volume + 90) * 2.65625));
+    iap_send_tx();
+}
+
+
 /* This thread is waiting for events posted to iap_queue and calls
  * the appropriate subroutines in response
  */
@@ -859,11 +878,15 @@ void iap_periodic(void)
 
     /* Volume change notifications are sent every 100ms */
     if (device.notifications & (BIT_N(4) | BIT_N(16))) {
-        /* Currently we do not track volume changes, so this is
-         * never sent.
+        /* Currently we do not track volume changes for BIT_N(16),
          *
-         * TODO: Fix volume tracking
          */
+        IAP_TX_INIT(0x03, 0x09);
+        IAP_TX_PUT(0x04);
+        IAP_TX_PUT(0x00);
+        IAP_TX_PUT(0xFF &(int)((global_settings.volume + 90) * 2.65625));
+        device.changed_notifications |= BIT_N(4);
+        iap_send_tx();
     }
 
     /* All other events are sent every 500ms */
@@ -972,9 +995,15 @@ void iap_periodic(void)
         unsigned char play_status;
 
         play_status = audio_status();
-
         if (device.play_status != play_status)
         {
+                        /* If play_status = PAUSE/STOP we should mute else
+                         * we should unmute 
+                         * 0 = Stopped
+                         * 1 = Playing
+                         * 2 = Pause
+                         * 3 = Play/Pause
+                         */
             IAP_TX_INIT(0x03, 0x09);
             IAP_TX_PUT(0x03);
             if (play_status & AUDIO_STATUS_PLAY) {
@@ -994,6 +1023,23 @@ void iap_periodic(void)
             iap_send_tx();
 
             device.play_status = play_status;
+                        if (play_status != 1) {
+                        /* Not Playing */
+                           audio_pause();
+#if CONFIG_TUNER
+               if (radio_present==1) {
+                  tuner_set(RADIO_MUTE,1);
+                           }
+#endif
+                        } else {
+                        /* Playing */
+                           audio_resume();
+#if CONFIG_TUNER
+                           if (radio_present==1) {
+                   tuner_set(RADIO_MUTE,0);
+               }
+#endif
+                        }
         }
     }
 
@@ -1212,43 +1258,6 @@ static void iap_handlepkt_mode5(const unsigned int len, const unsigned char *buf
     }
 }
 
-#if 0
-static void iap_handlepkt_mode7(const unsigned int len, const unsigned char *buf)
-{
-    unsigned int cmd = buf[1];
-    switch (cmd)
-    {
-        /* RetTunerCaps */
-        case 0x02:
-        {
-            /* do nothing */
-
-            /* GetAccessoryInfo */
-            unsigned char data[] = {0x00, 0x27, 0x00};
-            iap_send_pkt(data, sizeof(data));
-            break;
-        }
-
-        /* RetTunerFreq */
-        case 0x0A:
-            /* fall through */
-        /* TunerSeekDone */
-        case 0x13:
-        {
-            rmt_tuner_freq(len, buf);
-            break;
-        }
-
-        /* RdsReadyNotify, RDS station name 0x21 1E 00 + ASCII text*/
-        case 0x21:
-        {
-            rmt_tuner_rds_data(len, buf);
-            break;
-        }
-    }
-}
-#endif
-
 void iap_handlepkt(void)
 {
     int level;
@@ -1271,17 +1280,21 @@ void iap_handlepkt(void)
     logf("R: %s", hexstring(iap_rxstart+2, (length)));
 #endif
 
-    unsigned char mode = *(iap_rxstart+2);
-    switch (mode) {
-    case 0: iap_handlepkt_mode0(length, iap_rxstart+2); break;
+    if (length != 0) {
+        unsigned char mode = *(iap_rxstart+2);
+        switch (mode) {
+        case 0: iap_handlepkt_mode0(length, iap_rxstart+2); break;
 #ifdef HAVE_LINE_REC
-    case 1: iap_handlepkt_mode1(length, iap_rxstart+2); break;
+        case 1: iap_handlepkt_mode1(length, iap_rxstart+2); break;
 #endif
-    case 2: iap_handlepkt_mode2(length, iap_rxstart+2); break;
-    case 3: iap_handlepkt_mode3(length, iap_rxstart+2); break;
-    case 4: iap_handlepkt_mode4(length, iap_rxstart+2); break;
-    case 5: iap_handlepkt_mode5(length, iap_rxstart+2); break;
-    /* case 7: iap_handlepkt_mode7(length, iap_rxstart+2); break; */
+        case 2: iap_handlepkt_mode2(length, iap_rxstart+2); break;
+        case 3: iap_handlepkt_mode3(length, iap_rxstart+2); break;
+        case 4: iap_handlepkt_mode4(length, iap_rxstart+2); break;
+        case 5: iap_handlepkt_mode5(length, iap_rxstart+2); break;
+#if CONFIG_TUNER
+        case 7: iap_handlepkt_mode7(length, iap_rxstart+2); break;
+#endif
+        }
     }
 
     /* Remove the handled packet from the RX buffer