Initial commit of Arduino libraries

FastLED/src/fl/bytestreammemory.cpp

@@ -0,0 +1,68 @@
+#include <string.h>
+
+#include "fl/bytestreammemory.h"
+#include "fl/math_macros.h"
+#include "fl/namespace.h"
+#include "fl/warn.h"
+
+
+
+namespace fl {
+
+ByteStreamMemory::ByteStreamMemory(uint32_t size_buffer)
+    : mReadBuffer(size_buffer) {}
+
+ByteStreamMemory::~ByteStreamMemory() = default;
+
+bool ByteStreamMemory::available(size_t n) const {
+    return mReadBuffer.size() >= n;
+}
+
+size_t ByteStreamMemory::read(uint8_t *dst, size_t bytesToRead) {
+    if (!available(bytesToRead) || dst == nullptr) {
+        FASTLED_WARN("ByteStreamMemory::read: !available(bytesToRead): " << bytesToRead << " mReadBuffer.size(): " << mReadBuffer.size());
+        return 0;
+    }
+
+    size_t actualBytesToRead = MIN(bytesToRead, mReadBuffer.size());
+    size_t bytesRead = 0;
+
+    while (bytesRead < actualBytesToRead) {
+        uint8_t& b = dst[bytesRead];
+        mReadBuffer.pop_front(&b);
+        bytesRead++;
+    }
+
+    if (bytesRead == 0) {
+        FASTLED_WARN("ByteStreamMemory::read: bytesRead == 0");
+    }
+
+    return bytesRead;
+}
+
+size_t ByteStreamMemory::write(const uint8_t* src, size_t n) {
+    if (src == nullptr || mReadBuffer.capacity() == 0) {
+        FASTLED_WARN_IF(src == nullptr, "ByteStreamMemory::write: src == nullptr");
+        FASTLED_WARN_IF(mReadBuffer.capacity() == 0, "ByteStreamMemory::write: mReadBuffer.capacity() == 0");
+        return 0;
+    }
+
+    size_t written = 0;
+    for (size_t i = 0; i < n; ++i) {
+        if (mReadBuffer.full()) {
+            FASTLED_WARN("ByteStreamMemory::write: mReadBuffer.full(): " << mReadBuffer.size());
+            break;
+        }
+        mReadBuffer.push_back(src[i]);
+        ++written;
+    }
+    return written;
+}
+
+size_t ByteStreamMemory::writeCRGB(const CRGB* src, size_t n) {
+    size_t bytes_written = write(reinterpret_cast<const uint8_t*>(src), n * 3);
+    size_t pixels_written = bytes_written / 3;
+    return pixels_written;
+}
+
+}  // namespace fl