avoid some warnings in P4

Author: schreibfaul1

src/Audio.cpp

@@ -4,7 +4,7 @@
 
     Created on: Oct 28.2018                                                                                                  */
 char audioI2SVers[] = "\
-    Version 3.4.3a                                                                                                                              ";
+    Version 3.4.3b                                                                                                                              ";
 /*  Updated on: Sep 25.2025
 
     Author: Wolle (schreibfaul1)
@@ -1503,7 +1503,7 @@ int Audio::read_FLAC_Header(uint8_t* data, size_t len) {
     }
     // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
     if (m_controlCounter == FLAC_BEGIN) { // init
-        memset(&m_rflh, 0, sizeof(audiolib::rflh_t));
+        m_rflh.reset();
         m_controlCounter = FLAC_MAGIC;
         m_rflh.picVec.clear();
         return 0;

src/Audio.h

@@ -3,7 +3,7 @@
  *
  */
 
-// #define SR_48K
+#define SR_48K
 
 #pragma once
 #pragma GCC optimize("Ofast")

src/audiolib_structs.hpp

@@ -265,22 +265,27 @@ struct rwh_t { // used in read_WAV_Header
     uint8_t  bts = 0;
 };
 
-struct rflh_t { // used in read_FLAC_Header
-    std::vector<uint32_t> picVec;
-    size_t                headerSize;
-    size_t                retvalue;
-    bool                  f_lastMetaBlock;
-    uint32_t              picPos;
-    uint32_t              picLen;
-    uint32_t              duration;
-    uint32_t              nominalBitrate;
-    uint8_t               numChannels;
-    uint8_t               bitsPerSample;
-    uint32_t              sampleRate;
-    uint32_t              maxFrameSize;
-    uint32_t              maxBlockSize;
-    uint32_t              totalSamplesInStream;
-};
+typedef struct _rflh { // used in read_FLAC_Header
+    std::vector<uint32_t> picVec{};
+    size_t                headerSize{};
+    size_t                retvalue{};
+    bool                  f_lastMetaBlock{};
+    uint32_t              picPos{};
+    uint32_t              picLen{};
+    uint32_t              duration{};
+    uint32_t              nominalBitrate{};
+    uint8_t               numChannels{};
+    uint8_t               bitsPerSample{};
+    uint32_t              sampleRate{};
+    uint32_t              maxFrameSize{};
+    uint32_t              maxBlockSize{};
+    uint32_t              totalSamplesInStream{};
+
+    void reset() {
+        // Default-initialize alles neu (inklusive Array)
+        *this = _rflh{};
+    }
+} rflh_t;
 
 struct phreh_t { // used in parseHttpResponseHeader
     uint32_t ctime;

src/mp3_decoder/mp3_decoder.cpp

@@ -3245,13 +3245,29 @@ void MP3Decoder::FDCT32(int32_t* buf, int32_t* dest, int32_t offset, int32_t odd
  * P O L Y P H A S E
  */
 int16_t MP3Decoder::ClipToShort(int32_t x, int32_t fracBits) {
-
+#if(defined CONFIG_IDF_TARGET_ESP32 || defined CONFIG_IDF_TARGET_ESP32S3)
     /* assumes you've already rounded (x += (1 << (fracBits-1))) */
     x >>= fracBits;
-
     // this is better on xtensa (fb)
     asm("clamps %0, %1, 15" : "=a"(x) : "a"(x) :);
     return x;
+#endif
+
+#if (defined CONFIG_IDF_TARGET_ESP32P4)
+    int32_t sign;
+
+    /* assumes you've already rounded (x += (1 << (fracBits-1))) */
+    x >>= fracBits;
+
+    /* Ken's trick: clips to [-32768, 32767] */
+    sign = x >> 31;
+    if (sign != (x >> 15)) {
+        x = sign ^ ((1 << 15) - 1);
+    }
+
+    return (int16_t)x;
+#endif
+
 }
 // —————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————
 /*

src/opus_decoder/opus_decoder.cpp

@@ -87,9 +87,9 @@ bool OpusDecoder::isValid() {
 }
 // —————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————
 void OpusDecoder::OPUSsetDefaults() {
-    memset(&m_ofp2, 0, sizeof(m_ofp2));
-    memset(&m_ofp3, 0, sizeof(m_ofp3));
-    memset(&m_odp3, 0, sizeof(m_odp3));
+    m_ofp2.reset();
+    m_ofp3.reset();
+    m_odp3.reset();
     m_ofp3.firstCall = true;
     m_f_opusParseOgg = false;
     m_f_newSteamTitle = false; // streamTitle