add new endianess macros for FLOAT32

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2079 fefdeb5f-60dc-0310-8127-8f9354f1896f

diff --git a/src/pulsecore/endianmacros.h b/src/pulsecore/endianmacros.h
index 05d3262..6b80246 100644 (file)
--- a/src/pulsecore/endianmacros.h
+++ b/src/pulsecore/endianmacros.h
@@ -47,12 +47,20 @@
 #define PA_UINT32_SWAP(x) ( (uint32_t) ( ((uint32_t) x >> 24) | ((uint32_t) x << 24) | (((uint32_t) x & 0xFF00) << 8) | ((((uint32_t) x) >> 8) & 0xFF00) ) )
 #endif
 
+static inline float PA_FLOAT32_SWAP(float x) {
+    uint32_t i = *(uint32_t*) &x;
+    i = PA_UINT32_SWAP(i);
+    return *(float*) &i;
+}
+
 #define PA_MAYBE_INT16_SWAP(c,x) ((c) ? PA_INT32_SWAP(x) : x)
 #define PA_MAYBE_UINT16_SWAP(c,x) ((c) ? PA_UINT32_SWAP(x) : x)
 
 #define PA_MAYBE_INT32_SWAP(c,x) ((c) ? PA_INT32_SWAP(x) : x)
 #define PA_MAYBE_UINT32_SWAP(c,x) ((c) ? PA_UINT32_SWAP(x) : x)
 
+#define PA_MAYBE_FLOAT32_SWAP(c,x) ((c) ? PA_FLOAT32_SWAP(x) : x)
+
 #ifdef WORDS_BIGENDIAN
  #define PA_INT16_FROM_LE(x) PA_INT16_SWAP(x)
  #define PA_INT16_FROM_BE(x) ((int16_t)(x))
@@ -77,6 +85,9 @@
 
  #define PA_UINT32_TO_LE(x) PA_UINT32_SWAP(x)
  #define PA_UINT32_TO_BE(x) ((uint32_t)(x))
+
+ #define PA_FLOAT32_TO_LE(x) PA_FLOAT32_SWAP(x)
+ #define PA_FLOAT32_TO_BE(x) ((float) (x))
 #else
  #define PA_INT16_FROM_LE(x) ((int16_t)(x))
  #define PA_INT16_FROM_BE(x) PA_INT16_SWAP(x)
@@ -101,6 +112,9 @@
 
  #define PA_UINT32_TO_LE(x) ((uint32_t)(x))
  #define PA_UINT32_TO_BE(x) PA_UINT32_SWAP(x)
+
+ #define PA_FLOAT32_TO_LE(x) ((float) (x))
+ #define PA_FLOAT32_TO_BE(x) PA_FLOAT32_SWAP(x)
 #endif
 
 #endif