From 6beba9ee559fe372fcd997835441bcf94e8d3502 Mon Sep 17 00:00:00 2001
From: Alexey Yakovenko <wakeroid@gmail.com>
Date: Tue, 28 Jul 2009 15:36:22 +0200
Subject: added some preventive byteswapping for bigendian support in the
 future

---
 common.h | 12 ++++++++++++
 csid.cpp | 17 +++++++++--------
 psdl.c   |  3 ++-
 3 files changed, 23 insertions(+), 9 deletions(-)

diff --git a/common.h b/common.h
index 63f0f010..0cefcb8d 100644
--- a/common.h
+++ b/common.h
@@ -4,4 +4,16 @@
 #define min(x,y) ((x)<(y)?(x):(y))
 #define max(x,y) ((x)>(y)?(x):(y))
 
+inline void
+le_int16 (int16_t in, char *out) {
+    char *pin = (char *)&in;
+#if !BIGENDIAN
+    out[0] = pin[0];
+    out[1] = pin[1];
+#else
+    out[1] = pin[0];
+    out[0] = pin[1];
+#endif
+}
+
 #endif // __COMMON_H
diff --git a/csid.cpp b/csid.cpp
index 217eb189..404ff6f1 100644
--- a/csid.cpp
+++ b/csid.cpp
@@ -211,17 +211,18 @@ csid_init (const char *fname, int track, float start, float end) {
     md5_t md5;
     md5_init (&md5);
     md5_process (&md5, (const char *)tune->cache.get () + tune->fileOffset, tune->getInfo ().c64dataLen);
-    uint16_t tmp;
-    tmp = tune->getInfo ().initAddr;
-    md5_process (&md5, &tmp, 2);
-    tmp = tune->getInfo ().playAddr;
-    md5_process (&md5, &tmp, 2);
-    tmp = tune->getInfo ().songs;
-    md5_process (&md5, &tmp, 2);
+    char tmp[2];
+    le_int16 (tune->getInfo ().initAddr, tmp);
+    md5_process (&md5, tmp, 2);
+    le_int16 (tune->getInfo ().playAddr, tmp);
+    md5_process (&md5, tmp, 2);
+    le_int16 (tune->getInfo ().songs, tmp);
+    md5_process (&md5, tmp, 2);
     for (int s = 1; s <= tune->getInfo ().songs; s++)
     {
         tune->selectSong (s);
-        md5_process (&md5, &tune->getInfo ().songSpeed, sizeof (tune->getInfo ().songSpeed));
+        // songspeed is uint8_t, so no need for byteswap
+        md5_process (&md5, &tune->getInfo ().songSpeed, 1);
     }
     if (tune->getInfo ().clockSpeed == SIDTUNE_CLOCK_NTSC) {
         md5_process (&md5, &tune->getInfo ().clockSpeed, sizeof (tune->getInfo ().clockSpeed));
diff --git a/psdl.c b/psdl.c
index 04975b79..1ffa21ca 100644
--- a/psdl.c
+++ b/psdl.c
@@ -1,6 +1,7 @@
 #include <SDL/SDL.h>
 #include "psdl.h"
 #include "streamer.h"
+#include "common.h"
 
 static int sdl_player_numsamples = 4096;
 int sdl_player_freq;
@@ -88,7 +89,7 @@ psdl_callback (void* userdata, Uint8 *stream, int len) {
     int ivolume = sdl_volume * 1000;
     for (int i = 0; i < bytesread/2; i++) {
         int16_t sample = (int16_t)(((int32_t)(((int16_t*)stream)[i])) * ivolume / 1000);
-        ((int16_t*)stream)[i] = sample;
+        le_int16 (sample, (char*)&(((int16_t*)stream)[i]));
     }
     if (bytesread < len) {
         memset (stream + bytesread, 0, len-bytesread);
-- 
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