Refactor IR decoder and encoder for improved pulse filtering and ISR handling. Removed unused filtered sub-buffer, updated pulse filter methods, and added support for buffered ISR storage in the encoder. Enhanced documentation for clarity on DMA TX backend and ISR modes.

IrTxIsrBufferedStorage.h

@@ -0,0 +1,64 @@
+#pragma once
+
+#include "IR_config.h"
+#include "IrTxBsrrWave.h"
+
+class IrTxIsrBufferedStorageBase {
+public:
+    IrTxGateRun* gateRuns = nullptr;
+    size_t maxGateRuns = 0;
+    uint32_t* bsrrWords = nullptr;
+    uint16_t wordCount = 0;
+
+    IrTxBsrrWave wave{};
+    uint16_t readIdx = 0;
+    uint16_t halfLen = 0;
+    uint32_t totalTicks = 0;
+    uint32_t ticksSent = 0;
+
+    bool isValid() const {
+        return gateRuns != nullptr &&
+               maxGateRuns != 0U &&
+               bsrrWords != nullptr &&
+               wordCount >= 2U &&
+               (wordCount & 1U) == 0U;
+    }
+
+    void resetRuntimeState() {
+        readIdx = 0;
+        halfLen = static_cast<uint16_t>(wordCount / 2U);
+        totalTicks = 0;
+        ticksSent = 0;
+    }
+};
+
+class IrTxIsrBufferedStorageView : public IrTxIsrBufferedStorageBase {
+public:
+    IrTxIsrBufferedStorageView(IrTxGateRun* runs, size_t runCount, uint32_t* words, uint16_t wordsCount) {
+        gateRuns = runs;
+        maxGateRuns = runCount;
+        bsrrWords = words;
+        wordCount = wordsCount;
+        resetRuntimeState();
+    }
+};
+
+template<size_t MaxGateRuns = irproto::kIsrTxMaxGateRuns, uint16_t WordCount = irproto::kIsrTxBsrrWordCount>
+class IrTxIsrBufferedStorage : public IrTxIsrBufferedStorageBase {
+    static_assert(MaxGateRuns > 0U, "IrTxIsrBufferedStorage: MaxGateRuns > 0");
+    static_assert(WordCount >= 2U, "IrTxIsrBufferedStorage: WordCount >= 2");
+    static_assert((WordCount & 1U) == 0U, "IrTxIsrBufferedStorage: WordCount must be even");
+
+public:
+    IrTxIsrBufferedStorage() {
+        gateRuns = gateRunsStorage_;
+        maxGateRuns = MaxGateRuns;
+        bsrrWords = bsrrWordsStorage_;
+        wordCount = WordCount;
+        resetRuntimeState();
+    }
+
+private:
+    IrTxGateRun gateRunsStorage_[MaxGateRuns]{};
+    uint32_t bsrrWordsStorage_[WordCount]{};
+};