Init

Inc/BitBuffer.h

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+/*
+ * BitOps.h
+ *
+ *  Created on: Apr 13, 2021
+ *      Author: zemon
+ */
+
+#ifndef BITOPS_INC_BITOPS_H_
+#define BITOPS_INC_BITOPS_H_
+
+#include "stdint.h"
+
+
+void vBitBufferAppendDataByteBitsCountWithBitsOffset(
+        uint8_t *destinationBitSequence,
+        uint16_t offsetOfFirstBit,
+        uint8_t appendableByte,
+        uint8_t countOfAppendableBits
+);
+
+uint8_t vBitBufferAppendByte(
+        uint8_t *destinationBitSequence,
+        uint16_t offsetOfFirstBit,
+        uint8_t appendableByte,
+        uint8_t countOfAppendableBits
+);
+
+uint8_t vBitBufferAppendBits(
+        uint8_t *destinationBitSequence,
+        uint16_t offsetOfFirstBit,
+        uint8_t *appendableData,
+        uint8_t countOfAppendableBits
+);
+
+uint8_t vBitBufferAppendBitsReverseBytes(
+        uint8_t *destinationBitSequence,
+        uint16_t offsetOfFirstBit,
+        uint8_t *appendableData,
+        uint8_t countOfAppendableBits
+);
+
+uint8_t vBitBufferAppendBytesReverse(
+        uint8_t *destinationBitSequence,
+        uint16_t offsetOfFirstBit,
+        uint8_t *appendableData,
+        uint8_t countOfAppendableBytes
+);
+
+
+#endif /* BITOPS_INC_BITOPS_H_ */

Src/BitBuffer.c

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+/*
+ * BitOps.c
+ *
+ *  Created on: Apr 13, 2021
+ *      Author: zemon
+ */
+#include "BitBuffer.h"
+
+
+void vBitBufferAppendDataByteBitsCountWithBitsOffset(
+        uint8_t *destinationBitSequence,
+        uint16_t offsetOfFirstBit,
+        uint8_t appendableByte,
+        uint8_t countOfAppendableBits
+) {
+
+    uint16_t fullBytesOffset = offsetOfFirstBit / 8;
+    uint8_t bitsOffsetInFirstByte = offsetOfFirstBit % 8;
+    uint8_t bitsWritedToSecondByte = bitsOffsetInFirstByte + countOfAppendableBits - 8;
+
+    uint8_t firstByteCut = appendableByte << (8 - countOfAppendableBits);
+
+    destinationBitSequence[fullBytesOffset] |= firstByteCut >> bitsOffsetInFirstByte;
+
+    if (bitsWritedToSecondByte > 0) {
+        destinationBitSequence[fullBytesOffset + 1] |= appendableByte << (8 - bitsWritedToSecondByte);
+    }
+}
+
+uint8_t vBitBufferAppendByte(
+        uint8_t *destinationBitSequence,
+        uint16_t offsetOfFirstBit,
+        uint8_t appendableByte,
+        uint8_t countOfAppendableBits
+) {
+    vBitBufferAppendDataByteBitsCountWithBitsOffset(
+            destinationBitSequence,
+            offsetOfFirstBit,
+            appendableByte,
+            countOfAppendableBits
+    );
+    return countOfAppendableBits;
+}
+
+
+uint8_t vBitBufferAppendBits(
+        uint8_t *destinationBitSequence,
+        uint16_t offsetOfFirstBit,
+        uint8_t *appendableData,
+        uint8_t countOfAppendableBits
+) {
+
+    uint16_t fullBytes = countOfAppendableBits / 8;
+    uint16_t notFullByteBits = countOfAppendableBits % 8;
+
+    uint16_t i = 0;
+    for (; i < fullBytes; ++i) {
+        vBitBufferAppendDataByteBitsCountWithBitsOffset(
+                destinationBitSequence,
+                offsetOfFirstBit,
+                appendableData[i], 8
+        );
+        offsetOfFirstBit += 8;
+    }
+
+    if (notFullByteBits > 0) {
+        vBitBufferAppendDataByteBitsCountWithBitsOffset(
+                destinationBitSequence,
+                offsetOfFirstBit,
+                appendableData[i],
+                notFullByteBits
+        );
+    }
+    return countOfAppendableBits;
+}
+
+uint8_t vBitBufferAppendBitsReverseBytes(
+        uint8_t *destinationBitSequence,
+        uint16_t offsetOfFirstBit,
+        uint8_t *appendableData,
+        uint8_t countOfAppendableBits
+) {
+
+    uint16_t fullBytes = countOfAppendableBits / 8;
+    uint16_t notFullByteBits = countOfAppendableBits % 8;
+
+    uint16_t totalBytes = fullBytes + (notFullByteBits > 0 ? 1 : 0);
+
+    uint16_t i = 0;
+    for (; i < fullBytes; ++i) {
+        vBitBufferAppendDataByteBitsCountWithBitsOffset(
+                destinationBitSequence,
+                offsetOfFirstBit,
+                appendableData[(totalBytes - 1) - i],
+                8
+        );
+        offsetOfFirstBit += 8;
+    }
+
+    if (notFullByteBits > 0) {
+        vBitBufferAppendDataByteBitsCountWithBitsOffset(
+                destinationBitSequence,
+                offsetOfFirstBit,
+                appendableData[(totalBytes - 1) - i],
+                notFullByteBits
+        );
+    }
+    return countOfAppendableBits;
+}
+
+uint8_t vBitBufferAppendBytesReverse(
+        uint8_t *destinationBitSequence,
+        uint16_t offsetOfFirstBit,
+        uint8_t *appendableData,
+        uint8_t countOfAppendableBytes
+) {
+    for (int i = countOfAppendableBytes - 1; i > -1; --i) {
+        vBitBufferAppendDataByteBitsCountWithBitsOffset(
+                destinationBitSequence,
+                offsetOfFirstBit,
+                appendableData[i], 8
+        );
+        offsetOfFirstBit += 8;
+    }
+
+    return countOfAppendableBytes * 8;
+}
+

modular.json

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+{
+  "cmake": {
+    "inc_dirs": [
+      "Inc"
+    ],
+    "srcs": [
+      "Src/**.c"
+    ]
+  }
+}