1 files changed, 26 insertions, 0 deletions
diff --git a/plugins/gxvideo/swap.h b/plugins/gxvideo/swap.h
new file mode 100644
index 00000000..06d23d39
--- /dev/null
+++ b/plugins/gxvideo/swap.h
@@ -0,0 +1,26 @@
+#include <stdint.h>
+
+// byteswappings
+
+#define SWAP16(x) ({ uint16_t y=(x); (((y)>>8 & 0xff) | ((y)<<8 & 0xff00)); })
+#define SWAP32(x) ({ uint32_t y=(x); (((y)>>24 & 0xfful) | ((y)>>8 & 0xff00ul) | ((y)<<8 & 0xff0000ul) | ((y)<<24 & 0xff000000ul)); })
+
+// little endian config
+#define HOST2LE32(x) (x)
+#define HOST2BE32(x) SWAP32(x)
+#define LE2HOST32(x) (x)
+#define BE2HOST32(x) SWAP32(x)
+
+#define HOST2LE16(x) (x)
+#define HOST2BE16(x) SWAP16(x)
+#define LE2HOST16(x) (x)
+#define BE2HOST16(x) SWAP16(x)
+
+#define GETLEs16(X) ((int16_t)GETLE16((uint16_t *)X))
+#define GETLEs32(X) ((int16_t)GETLE32((uint16_t *)X))
+
+#define GETLE16(X) LE2HOST16(*(uint16_t *)X)
+#define GETLE32(X) LE2HOST32(*(uint32_t *)X)
+#define GETLE16D(X) ({uint32_t val = GETLE32(X); (val<<16 | val >> 16);})
+#define PUTLE16(X, Y) do{*((uint16_t *)X)=HOST2LE16((uint16_t)Y);}while(0)
+#define PUTLE32(X, Y) do{*((uint32_t *)X)=HOST2LE16((uint32_t)Y);}while(0)