| -rw-r--r-- | noncore/multimedia/opieplayer2/bswap.h | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/noncore/multimedia/opieplayer2/bswap.h b/noncore/multimedia/opieplayer2/bswap.h new file mode 100644 index 0000000..fc159fb --- a/dev/null +++ b/noncore/multimedia/opieplayer2/bswap.h @@ -0,0 +1,181 @@ +#ifndef __BSWAP_H__ +#define __BSWAP_H__ + +#ifdef HAVE_BYTESWAP_H +#include <byteswap.h> +#else +#include <inttypes.h> + + +#ifdef ARCH_X86 +inline static unsigned short ByteSwap16(unsigned short x) +{ + __asm("xchgb %b0,%h0" : + "=q" (x) : + "0" (x)); + return x; +} +#define bswap_16(x) ByteSwap16(x) + +inline static unsigned int ByteSwap32(unsigned int x) +{ +#if __CPU__ > 386 + __asm("bswap %0": + "=r" (x) : +#else + __asm("xchgb %b0,%h0\n" + " rorl $16,%0\n" + " xchgb %b0,%h0": + "=q" (x) : +#endif + "0" (x)); + return x; +} +#define bswap_32(x) ByteSwap32(x) + +inline static unsigned long long int ByteSwap64(unsigned long long int x) +{ + register union { __extension__ unsigned long long int __ll; + unsigned long int __l[2]; } __x; + asm("xchgl %0,%1": + "=r"(__x.__l[0]),"=r"(__x.__l[1]): + "0"(bswap_32((unsigned long)x)),"1"(bswap_32((unsigned long)(x>>32)))); + return __x.__ll; +} +#define bswap_64(x) ByteSwap64(x) + +#else + +#define bswap_16(x) (((x) & 0x00ff) << 8 | ((x) & 0xff00) >> 8) + +#define bswap_32(x) \ + ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \ + (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24)) + +#ifdef __GNUC__ +/* code from bits/byteswap.h (C) 1997, 1998 Free Software Foundation, Inc. */ +#define bswap_64(x) \ + (__extension__ \ + ({ union { __extension__ unsigned long long int __ll; \ + unsigned long int __l[2]; } __w, __r; \ + __w.__ll = (x); \ + __r.__l[0] = bswap_32 (__w.__l[1]); \ + __r.__l[1] = bswap_32 (__w.__l[0]); \ + __r.__ll; })) +#else +#define bswap_64(x) \ + ((((x) & 0xff00000000000000LL) >> 56) | \ + (((x) & 0x00ff000000000000LL) >> 40) | \ + (((x) & 0x0000ff0000000000LL) >> 24) | \ + (((x) & 0x000000ff00000000LL) >> 8) | \ + (((x) & 0x00000000ff000000LL) << 8) | \ + (((x) & 0x0000000000ff0000LL) << 24) | \ + (((x) & 0x000000000000ff00LL) << 40) | \ + (((x) & 0x00000000000000ffLL) << 56)) +#endif /* !__GNUC__ */ + +#endif /* !ARCH_X86 */ + +#endif /* !HAVE_BYTESWAP_H */ + +/* be2me ... BigEndian to MachineEndian */ +/* le2me ... LittleEndian to MachineEndian */ + +#ifdef WORDS_BIGENDIAN +#define be2me_16(x) (x) +#define be2me_32(x) (x) +#define be2me_64(x) (x) +#define le2me_16(x) bswap_16(x) +#define le2me_32(x) bswap_32(x) +#define le2me_64(x) bswap_64(x) +#else +#define be2me_16(x) bswap_16(x) +#define be2me_32(x) bswap_32(x) +#define be2me_64(x) bswap_64(x) +#define le2me_16(x) (x) +#define le2me_32(x) (x) +#define le2me_64(x) (x) +#endif + +#define ABE_16(x) (be2me_16(*(uint16_t*)(x))) +#define ABE_32(x) (be2me_32(*(uint32_t*)(x))) +#define ABE_64(x) (be2me_64(*(uint64_t*)(x))) +#define ALE_16(x) (le2me_16(*(uint16_t*)(x))) +#define ALE_32(x) (le2me_32(*(uint32_t*)(x))) +#define ALE_64(x) (le2me_64(*(uint64_t*)(x))) + +#ifdef ARCH_X86 + +#define BE_16(x) ABE_16(x) +#define BE_32(x) ABE_32(x) +#define BE_64(x) ABE_64(x) +#define LE_16(x) ALE_16(x) +#define LE_32(x) ALE_32(x) +#define LE_64(x) ALE_64(x) + +#else + +#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1]) +#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \ + (((uint8_t*)(x))[1] << 16) | \ + (((uint8_t*)(x))[2] << 8) | \ + ((uint8_t*)(x))[3]) +#define BE_64(x) ((uint64_t)(((uint8_t*)(x))[0] << 56) | \ + (uint64_t)(((uint8_t*)(x))[1] << 48) | \ + (uint64_t)(((uint8_t*)(x))[2] << 40) | \ + (uint64_t)(((uint8_t*)(x))[3] << 32) | \ + (uint64_t)(((uint8_t*)(x))[4] << 24) | \ + (uint64_t)(((uint8_t*)(x))[5] << 16) | \ + (uint64_t)(((uint8_t*)(x))[6] << 8) | \ + (uint64_t)((uint8_t*)(x))[7]) +#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0]) +#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \ + (((uint8_t*)(x))[2] << 16) | \ + (((uint8_t*)(x))[1] << 8) | \ + ((uint8_t*)(x))[0]) +#define LE_64(x) ((uint64_t)(((uint8_t*)(x))[7] << 56) | \ + (uint64_t)(((uint8_t*)(x))[6] << 48) | \ + (uint64_t)(((uint8_t*)(x))[5] << 40) | \ + (uint64_t)(((uint8_t*)(x))[4] << 32) | \ + (uint64_t)(((uint8_t*)(x))[3] << 24) | \ + (uint64_t)(((uint8_t*)(x))[2] << 16) | \ + (uint64_t)(((uint8_t*)(x))[1] << 8) | \ + (uint64_t)((uint8_t*)(x))[0]) + +#endif /* !ARCH_X86 */ + +#ifdef WORDS_BIGENDIAN +#define ME_16(x) BE_16(x) +#define ME_32(x) BE_32(x) +#define ME_64(x) BE_64(x) +#define AME_16(x) ABE_16(x) +#define AME_32(x) ABE_32(x) +#define AME_64(x) ABE_64(x) +#else +#define ME_16(x) LE_16(x) +#define ME_32(x) LE_32(x) +#define ME_64(x) LE_64(x) +#define AME_16(x) ALE_16(x) +#define AME_32(x) ALE_32(x) +#define AME_64(x) ALE_64(x) +#endif + +#define BE_FOURCC( ch0, ch1, ch2, ch3 ) \ + ( (uint32_t)(unsigned char)(ch3) | \ + ( (uint32_t)(unsigned char)(ch2) << 8 ) | \ + ( (uint32_t)(unsigned char)(ch1) << 16 ) | \ + ( (uint32_t)(unsigned char)(ch0) << 24 ) ) + +#define LE_FOURCC( ch0, ch1, ch2, ch3 ) \ + ( (uint32_t)(unsigned char)(ch0) | \ + ( (uint32_t)(unsigned char)(ch1) << 8 ) | \ + ( (uint32_t)(unsigned char)(ch2) << 16 ) | \ + ( (uint32_t)(unsigned char)(ch3) << 24 ) ) + +#ifdef WORDS_BIGENDIAN +#define ME_FOURCC BE_FOURCC +#else +#define ME_FOURCC LE_FOURCC +#endif + +#endif |