Add Sharp and DISH transmission support.

This change is from Todd Treece:
http://arcfn.com/2009/08/multi-protocol-infrared-remote-library.html?showComment=1264093513759#c3138785324309374640

IRremote.cpp

@@ -652,3 +652,75 @@ long IRrecv::decodeHash(decode_results *results) {
   results->decode_type = UNKNOWN;
   return DECODED;
 }
+
+/* Sharp and DISH support by Todd Treece
+
+The Dish send function needs to be repeated 4 times and the Sharp function
+has the necessary repeats built in. I know that it's not consistent,
+but I don't have the time to update my code.
+
+Here are the LIRC files that I found that seem to match the remote codes
+from the oscilloscope:
+
+Sharp LCD TV:
+http://lirc.sourceforge.net/remotes/sharp/GA538WJSA
+
+DISH NETWORK (echostar 301):
+http://lirc.sourceforge.net/remotes/echostar/301_501_3100_5100_58xx_59xx
+
+For the DISH codes, only send the last for characters of the hex.
+i.e. use 0x1C10 instead of 0x0000000000001C10 which is listed in the
+linked LIRC file.
+*/
+
+void IRsend::sendSharp(unsigned long data, int nbits) {
+  unsigned long invertdata = data ^ SHARP_TOGGLE_MASK;
+  enableIROut(38);
+  for (int i = 0; i < nbits; i++) {
+    if (data & 0x4000) {
+      mark(SHARP_BIT_MARK);
+      space(SHARP_ONE_SPACE);
+    }
+    else {
+      mark(SHARP_BIT_MARK);
+      space(SHARP_ZERO_SPACE);
+    }
+    data <<= 1;
+  }
+  
+  mark(SHARP_BIT_MARK);
+  space(SHARP_ZERO_SPACE);
+  delay(46);
+  for (int i = 0; i < nbits; i++) {
+    if (invertdata & 0x4000) {
+      mark(SHARP_BIT_MARK);
+      space(SHARP_ONE_SPACE);
+    }
+    else {
+      mark(SHARP_BIT_MARK);
+      space(SHARP_ZERO_SPACE);
+    }
+    invertdata <<= 1;
+  }
+  mark(SHARP_BIT_MARK);
+  space(SHARP_ZERO_SPACE);
+  delay(46);
+}
+
+void IRsend::sendDISH(unsigned long data, int nbits)
+{
+  enableIROut(56);
+  mark(DISH_HDR_MARK);
+  space(DISH_HDR_SPACE);
+  for (int i = 0; i < nbits; i++) {
+    if (data & DISH_TOP_BIT) {
+      mark(DISH_BIT_MARK);
+      space(DISH_ONE_SPACE);
+    }
+    else {
+      mark(DISH_BIT_MARK);
+      space(DISH_ZERO_SPACE);
+    }
+    data <<= 1;
+  }
+}

IRremote.h

@@ -35,6 +35,8 @@ public:
 #define SONY 2
 #define RC5 3
 #define RC6 4
+#define DISH 5
+#define SHARP 6
 #define UNKNOWN -1
 
 // Decoded value for NEC when a repeat code is received
@@ -78,6 +80,8 @@ public:
   void sendRaw(unsigned int buf[], int len, int hz);
   void sendRC5(unsigned long data, int nbits);
   void sendRC6(unsigned long data, int nbits);
+  void sendDISH(unsigned long data, int nbits);
+  void sendSharp(unsigned long data, int nbits);
   // private:
   void enableIROut(int khz);
   VIRTUAL void mark(int usec);

IRremoteInt.h

@@ -59,6 +59,24 @@
 #define RC6_T1		444
 #define RC6_RPT_LENGTH	46000
 
+#define SHARP_BIT_MARK 245
+#define SHARP_ONE_SPACE 1805
+#define SHARP_ZERO_SPACE 795
+#define SHARP_GAP 600000
+#define SHARP_TOGGLE_MASK 0x3FF
+#define SHARP_RPT_SPACE 3000
+
+#define DISH_HDR_MARK 400
+#define DISH_HDR_SPACE 6100
+#define DISH_BIT_MARK 400
+#define DISH_ONE_SPACE 1700
+#define DISH_ZERO_SPACE 2800
+#define DISH_RPT_SPACE 6200
+#define DISH_TOP_BIT 0x8000
+
+#define SHARP_BITS 15
+#define DISH_BITS 16
+
 #define TOLERANCE 25  // percent tolerance in measurements
 #define LTOL (1.0 - TOLERANCE/100.) 
 #define UTOL (1.0 + TOLERANCE/100.)