1 files changed, 122 insertions, 38 deletions
diff --git a/src/pulsecore/endianmacros.h b/src/pulsecore/endianmacros.h
index 65db3feb..2b18cf8d 100644
--- a/src/pulsecore/endianmacros.h
+++ b/src/pulsecore/endianmacros.h
@@ -1,21 +1,22 @@
 #ifndef fooendianmacroshfoo
 #define fooendianmacroshfoo
 
-/* $Id$ */
-
 /***
   This file is part of PulseAudio.
- 
+
+  Copyright 2004-2006 Lennart Poettering
+  Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
+
   PulseAudio is free software; you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as published
-  by the Free Software Foundation; either version 2 of the License,
+  by the Free Software Foundation; either version 2.1 of the License,
   or (at your option) any later version.
- 
+
   PulseAudio is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   General Public License for more details.
- 
+
   You should have received a copy of the GNU Lesser General Public License
   along with PulseAudio; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
@@ -24,54 +25,137 @@
 
 #include <inttypes.h>
 
-#ifdef HAVE_CONFIG_H
-#include <config.h>
+#ifndef PACKAGE
+#error "Please include config.h before including this file!"
 #endif
 
-#define INT16_SWAP(x) ( (int16_t) ( ((uint16_t) x >> 8) | ((uint16_t) x << 8) ) )
-#define UINT16_SWAP(x) ( (uint16_t) ( ((uint16_t) x >> 8) | ((uint16_t) x << 8) ) )
-#define INT32_SWAP(x) ( (int32_t) ( ((uint32_t) x >> 24) | ((uint32_t) x << 24) | (((uint32_t) x & 0xFF00) << 8) | ((((uint32_t) x) >> 8) & 0xFF00) ) )
-#define UINT32_SWAP(x) ( (uint32_t) ( ((uint32_t) x >> 24) | ((uint32_t) x << 24) | (((uint32_t) x & 0xFF00) << 8) | ((((uint32_t) x) >> 8) & 0xFF00) ) )
+#ifdef HAVE_BYTESWAP_H
+#include <byteswap.h>
+#endif
 
-#define MAYBE_INT32_SWAP(c,x) ((c) ? INT32_SWAP(x) : x)
-#define MAYBE_UINT32_SWAP(c,x) ((c) ? UINT32_SWAP(x) : x)
+#ifdef HAVE_BYTESWAP_H
+#define PA_INT16_SWAP(x) ((int16_t) bswap_16((uint16_t) x))
+#define PA_UINT16_SWAP(x) ((uint16_t) bswap_16((uint16_t) x))
+#define PA_INT32_SWAP(x) ((int32_t) bswap_32((uint32_t) x))
+#define PA_UINT32_SWAP(x) ((uint32_t) bswap_32((uint32_t) x))
+#else
+#define PA_INT16_SWAP(x) ( (int16_t) ( ((uint16_t) (x) >> 8) | ((uint16_t) (x) << 8) ) )
+#define PA_UINT16_SWAP(x) ( (uint16_t) ( ((uint16_t) (x) >> 8) | ((uint16_t) (x) << 8) ) )
+#define PA_INT32_SWAP(x) ( (int32_t) ( ((uint32_t) (x) >> 24) | ((uint32_t) (x) << 24) | (((uint32_t) (x) & 0xFF00) << 8) | ((((uint32_t) (x)) >> 8) & 0xFF00) ) )
+#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 uint32_t PA_READ24BE(const uint8_t *p) {
+    return
+        ((uint32_t) p[0] << 16) |
+        ((uint32_t) p[1] << 8) |
+        ((uint32_t) p[2]);
+}
+
+static inline uint32_t PA_READ24LE(const uint8_t *p) {
+    return
+        ((uint32_t) p[2] << 16) |
+        ((uint32_t) p[1] << 8) |
+        ((uint32_t) p[0]);
+}
+
+static inline void PA_WRITE24BE(uint8_t *p, uint32_t u) {
+    p[0] = (uint8_t) (u >> 16);
+    p[1] = (uint8_t) (u >> 8);
+    p[2] = (uint8_t) u;
+}
+
+static inline void PA_WRITE24LE(uint8_t *p, uint32_t u) {
+    p[2] = (uint8_t) (u >> 16);
+    p[1] = (uint8_t) (u >> 8);
+    p[0] = (uint8_t) u;
+}
+
+static inline float PA_FLOAT32_SWAP(float x) {
+    union {
+        float f;
+        uint32_t u;
+    } t;
+
+    t.f = x;
+    t.u = PA_UINT32_SWAP(t.u);
+    return t.f;
+}
+
+#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 INT16_FROM_LE(x) INT16_SWAP(x)
- #define INT16_FROM_BE(x) ((int16_t)(x))
+ #define PA_INT16_FROM_LE(x) PA_INT16_SWAP(x)
+ #define PA_INT16_FROM_BE(x) ((int16_t)(x))
+
+ #define PA_INT16_TO_LE(x) PA_INT16_SWAP(x)
+ #define PA_INT16_TO_BE(x) ((int16_t)(x))
 
- #define INT16_TO_LE(x) INT16_SWAP(x)
- #define INT16_TO_BE(x) ((int16_t)(x))
+ #define PA_UINT16_FROM_LE(x) PA_UINT16_SWAP(x)
+ #define PA_UINT16_FROM_BE(x) ((uint16_t)(x))
 
- #define UINT16_FROM_LE(x) UINT16_SWAP(x)
- #define UINT16_FROM_BE(x) ((uint16_t)(x))
+ #define PA_UINT16_TO_LE(x) PA_UINT16_SWAP(x)
+ #define PA_UINT16_TO_BE(x) ((uint16_t)(x))
 
- #define INT32_FROM_LE(x) INT32_SWAP(x)
- #define INT32_FROM_BE(x) ((int32_t)(x))
+ #define PA_INT32_FROM_LE(x) PA_INT32_SWAP(x)
+ #define PA_INT32_FROM_BE(x) ((int32_t)(x))
 
- #define UINT32_FROM_LE(x) UINT32_SWAP(x)
- #define UINT32_FROM_BE(x) ((uint32_t)(x))
+ #define PA_INT32_TO_LE(x) PA_INT32_SWAP(x)
+ #define PA_INT32_TO_BE(x) ((int32_t)(x))
 
- #define UINT32_TO_LE(x) UINT32_SWAP(x)
- #define UINT32_TO_BE(x) ((uint32_t)(x))
+ #define PA_UINT32_FROM_LE(x) PA_UINT32_SWAP(x)
+ #define PA_UINT32_FROM_BE(x) ((uint32_t)(x))
+
+ #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))
+
+ #define PA_READ24NE(x) PA_READ24BE(x)
+ #define PA_WRITE24NE(x,y) PA_WRITE24BE((x),(y))
+
+ #define PA_READ24RE(x) PA_READ24LE(x)
+ #define PA_WRITE24RE(x,y) PA_WRITE24LE((x),(y))
 #else
- #define INT16_FROM_LE(x) ((int16_t)(x))
- #define INT16_FROM_BE(x) INT16_SWAP(x)
+ #define PA_INT16_FROM_LE(x) ((int16_t)(x))
+ #define PA_INT16_FROM_BE(x) PA_INT16_SWAP(x)
+
+ #define PA_INT16_TO_LE(x) ((int16_t)(x))
+ #define PA_INT16_TO_BE(x) PA_INT16_SWAP(x)
+
+ #define PA_UINT16_FROM_LE(x) ((uint16_t)(x))
+ #define PA_UINT16_FROM_BE(x) PA_UINT16_SWAP(x)
+
+ #define PA_UINT16_TO_LE(x) ((uint16_t)(x))
+ #define PA_UINT16_TO_BE(x) PA_UINT16_SWAP(x)
+
+ #define PA_INT32_FROM_LE(x) ((int32_t)(x))
+ #define PA_INT32_FROM_BE(x) PA_INT32_SWAP(x)
+
+ #define PA_INT32_TO_LE(x) ((int32_t)(x))
+ #define PA_INT32_TO_BE(x) PA_INT32_SWAP(x)
 
- #define INT16_TO_LE(x) ((int16_t)(x))
- #define INT16_TO_BE(x) INT16_SWAP(x)
+ #define PA_UINT32_FROM_LE(x) ((uint32_t)(x))
+ #define PA_UINT32_FROM_BE(x) PA_UINT32_SWAP(x)
 
- #define UINT16_FROM_LE(x) ((uint16_t)(x))
- #define UINT16_FROM_BE(x) UINT16_SWAP(x)
+ #define PA_UINT32_TO_LE(x) ((uint32_t)(x))
+ #define PA_UINT32_TO_BE(x) PA_UINT32_SWAP(x)
 
- #define INT32_FROM_LE(x) ((int32_t)(x))
- #define INT32_FROM_BE(x) INT32_SWAP(x)
+ #define PA_FLOAT32_TO_LE(x) ((float) (x))
+ #define PA_FLOAT32_TO_BE(x) PA_FLOAT32_SWAP(x)
 
- #define UINT32_FROM_LE(x) ((uint32_t)(x))
- #define UINT32_FROM_BE(x) UINT32_SWAP(x)
+ #define PA_READ24NE(x) PA_READ24LE(x)
+ #define PA_WRITE24NE(x,y) PA_WRITE24LE((x),(y))
 
- #define UINT32_TO_LE(x) ((uint32_t)(x))
- #define UINT32_TO_BE(x) UINT32_SWAP(x)
+ #define PA_READ24RE(x) PA_READ24BE(x)
+ #define PA_WRITE24RE(x,y) PA_WRITE24BE((x),(y))
 #endif
 
 #endif