完善V1.4踢乒乓球版本

v1.4 摄像头提乒乓球方案/platformio/lib/FastLED/src/fl/strstream.cpp

@@ -0,0 +1,43 @@
+#include "fl/strstream.h"
+#include "crgb.h"
+#include "fl/tile2x2.h"
+#include "fl/fft.h"
+#include "str.h"
+
+namespace fl {
+
+
+StrStream &StrStream::operator<<(const Tile2x2_u8 &subpixel) {
+    mStr.append("Tile2x2_u8(");
+    mStr.append(subpixel.bounds());
+    mStr.append(" => ");
+    mStr.append(subpixel.at(0, 0));
+    mStr.append(",");
+    mStr.append(subpixel.at(0, 1));
+    mStr.append(",");
+    mStr.append(subpixel.at(1, 0));
+    mStr.append(",");
+    mStr.append(subpixel.at(1, 1));
+    mStr.append(")");
+    return *this;
+}
+
+// FFTBins support - show both raw and db bins  
+StrStream &StrStream::operator<<(const FFTBins &bins) {
+    mStr.append("FFTBins(size=");
+    mStr.append(bins.size());
+    mStr.append(", raw=");
+    (*this) << bins.bins_raw;
+    mStr.append(", db=");
+    (*this) << bins.bins_db;
+    mStr.append(")");
+    return *this;
+}
+
+// Tile2x2_u8_wrap support - delegates to fl::string::append which already knows how to format it
+StrStream &StrStream::operator<<(const Tile2x2_u8_wrap &tile) {
+    mStr.append(tile);
+    return *this;
+}
+
+} // namespace fl