}
#endif
+#if !AV_GCC_VERSION_AT_LEAST(4,5)
#define av_bswap32 av_bswap32
static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
{
#endif /* HAVE_ARMV6 */
return x;
}
+#endif /* !AV_GCC_VERSION_AT_LEAST(4,5) */
#endif /* __ARMCC_VERSION */
#ifndef av_bswap32
static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
{
- x= ((x<<8)&0xFF00FF00) | ((x>>8)&0x00FF00FF);
- x= (x>>16) | (x<<16);
- return x;
+ return AV_BSWAP32C(x);
}
#endif
#ifndef av_bswap64
static inline uint64_t av_const av_bswap64(uint64_t x)
{
- union {
- uint64_t ll;
- uint32_t l[2];
- } w, r;
- w.ll = x;
- r.l[0] = av_bswap32 (w.l[1]);
- r.l[1] = av_bswap32 (w.l[0]);
- return r.ll;
+ return (uint64_t)av_bswap32(x) << 32 | av_bswap32(x >> 32);
}
#endif
#include "config.h"
#include "libavutil/attributes.h"
+#if !AV_GCC_VERSION_AT_LEAST(4,1)
#define av_bswap16 av_bswap16
static av_always_inline av_const unsigned av_bswap16(unsigned x)
{
__asm__("rorw $8, %w0" : "+r"(x));
return x;
}
+#endif /* !AV_GCC_VERSION_AT_LEAST(4,1) */
+#if !AV_GCC_VERSION_AT_LEAST(4,5)
#define av_bswap32 av_bswap32
static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
{
return x;
}
#endif
+#endif /* !AV_GCC_VERSION_AT_LEAST(4,5) */
#endif /* AVUTIL_X86_BSWAP_H */