audio format: use bswap*()

modules/audio_filter/converter/format.c

@@ -481,42 +481,38 @@ static void S24toFl32(block_t *bdst, const block_t *bsrc)
 }
 
 /* */
-#define XCHG(type, a, b) \
-    do { type _tmp = a; a = b; b = _tmp; } while(0)
 static void Swap64(block_t *b)
 {
-    uint8_t *data = (uint8_t *)b->p_buffer;
+    uint64_t *data = (uint64_t *)b->p_buffer;
     for (size_t i = 0; i < b->i_buffer / 8; i++) {
-        XCHG(uint8_t, data[0], data[7]);
-        XCHG(uint8_t, data[1], data[6]);
-        XCHG(uint8_t, data[2], data[5]);
-        XCHG(uint8_t, data[3], data[4]);
-        data += 8;
+        *data = bswap64 (*data);
+        data++;
     }
 }
 static void Swap32(block_t *b)
 {
-    uint8_t *data = (uint8_t *)b->p_buffer;
+    uint32_t *data = (uint32_t *)b->p_buffer;
     for (size_t i = 0; i < b->i_buffer / 4; i++) {
-        XCHG(uint8_t, data[0], data[3]);
-        XCHG(uint8_t, data[1], data[2]);
-        data += 4;
+        *data = bswap32 (*data);
+        data++;
     }
 }
 static void Swap24(block_t *b)
 {
     uint8_t *data = (uint8_t *)b->p_buffer;
     for (size_t i = 0; i < b->i_buffer / 3; i++) {
-        XCHG(uint8_t, data[0], data[2]);
+        uint8_t buf = data[0];
+        data[0] = data[2];
+        data[2] = buf;
         data += 3;
     }
 }
 static void Swap16(block_t *b)
 {
-    uint8_t *data = (uint8_t *)b->p_buffer;
+    uint16_t *data = (uint16_t *)b->p_buffer;
     for (size_t i = 0; i < b->i_buffer / 2; i++) {
-        XCHG(uint8_t, data[0], data[1]);
-        data += 2;
+        *data = bswap16 (*data);
+        data++;
     }
 }