Merge pull request #3 from prplecake/ir_decoder

Author: prplecake

infrared/apps/ir_decoder/helpers/bit_ops.c

@@ -0,0 +1,23 @@
+#include "bit_ops.h"
+
+// https://stackoverflow.com/questions/746171/efficient-algorithm-for-bit-reversal-from-msb-lsb-to-lsb-msb-in-c/746382#746382
+int bit_reversal(uint32_t input) {
+    int s = sizeof(input) * 2;
+    int i, x, y, p;
+    int rtn = 0;
+
+    for(i = 0; i < (s / 2); i++) {
+        // extract bit on the left, from MSB
+        p = s - i - 1;
+        x = input & (1 << p);
+        x = x >> p;
+
+        // extract bit on the right, from LSB
+        y = input & (1 << i);
+        y = y >> i;
+
+        rtn = rtn | (x << i);
+        rtn = rtn | (y << p);
+    }
+    return rtn;
+}

infrared/apps/ir_decoder/helpers/bit_ops.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#include <stdint.h>
+
+int bit_reversal(uint32_t input);

infrared/apps/ir_decoder/ir_decoder.c

@@ -1,39 +1,4 @@
-#include <furi.h>
-#include <furi_hal.h>
-#include <infrared.h>
-#include <infrared_worker.h>
-#include <furi_hal_infrared.h>
-#include <gui/gui.h>
-
-#define TAG "IR Decoder"
-
-typedef struct {
-    InfraredMessage* decoded_signal;
-    FuriMutex* mutex;
-    ViewPort* view_port;
-} IRDecoderState;
-
-// https://stackoverflow.com/questions/746171/efficient-algorithm-for-bit-reversal-from-msb-lsb-to-lsb-msb-in-c/746382#746382
-static int bit_reversal(uint32_t input) {
-    int s = sizeof(input) * 2;
-    int i, x, y, p;
-    int rtn = 0;
-
-    for(i = 0; i < (s / 2); i++) {
-        // extract bit on the left, from MSB
-        p = s - i - 1;
-        x = input & (1 << p);
-        x = x >> p;
-
-        // extract bit on the right, from LSB
-        y = input & (1 << i);
-        y = y >> i;
-
-        rtn = rtn | (x << i);
-        rtn = rtn | (y << p);
-    }
-    return rtn;
-}
+#include "ir_decoder.h"
 
 static void render_callback(Canvas* canvas, void* ctx) {
     FURI_LOG_T(TAG, "Render callback");

infrared/apps/ir_decoder/ir_decoder.h

@@ -0,0 +1,16 @@
+#include <furi.h>
+#include <furi_hal.h>
+#include <infrared.h>
+#include <infrared_worker.h>
+#include <furi_hal_infrared.h>
+#include <gui/gui.h>
+
+#include "helpers/bit_ops.h"
+
+#define TAG "IR Decoder"
+
+typedef struct {
+    InfraredMessage* decoded_signal;
+    FuriMutex* mutex;
+    ViewPort* view_port;
+} IRDecoderState;