From d49a0855a33bb56cc1935642c0d4bf7a3f474fbd Mon Sep 17 00:00:00 2001
From: Manuel Virgilio <real_virgil@yahoo.it>
Date: Thu, 23 Jul 2020 15:12:35 +0200
Subject: [PATCH] Added wav_header be-to-le conversion functions

---
 webrtc/common_audio/wav_header.cc | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/webrtc/common_audio/wav_header.cc b/webrtc/common_audio/wav_header.cc
index d3dca90..0d14e26 100644
--- a/webrtc/common_audio/wav_header.cc
+++ b/webrtc/common_audio/wav_header.cc
@@ -26,10 +26,6 @@
 namespace webrtc {
 namespace {
 
-#ifndef WEBRTC_ARCH_LITTLE_ENDIAN
-#error "Code not working properly for big endian platforms."
-#endif
-
 #pragma pack(2)
 struct ChunkHeader {
   uint32_t ID;
@@ -117,9 +113,22 @@ uint32_t PackFourCC(char a, char b, char c, char d) {
   return packed_value;
 }
 
+#ifdef WEBRTC_ARCH_LITTLE_ENDIAN
 std::string ReadFourCC(uint32_t x) {
   return std::string(reinterpret_cast<char*>(&x), 4);
 }
+#else
+static inline uint32_t ReadLE32(uint32_t x) {
+  return ((x << 24) & 0xFF000000)
+       | ((x <<  8) & 0x00FF0000)
+       | ((x >>  8) & 0x0000FF00)
+       | ((x >> 24) & 0x000000FF);
+}
+std::string ReadFourCC(uint32_t x) {
+  x = ReadLE32(x);
+  return std::string(reinterpret_cast<char*>(&x), 4);
+}
+#endif
 
 uint16_t MapWavFormatToHeaderField(WavFormat format) {
   switch (format) {
-- 
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