/* * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef MP_AVUTIL_INTREADWRITE_H #define MP_AVUTIL_INTREADWRITE_H #include #include "config.h" #include "bswap.h" /* * Arch-specific headers can provide any combination of * AV_[RW][BLN](16|32|64) macros. Preprocessor symbols must be * defined, even if these are implemented as inline functions. */ #if ARCH_ARM # include "arm/intreadwrite.h" #elif ARCH_MIPS # include "mips/intreadwrite.h" #elif ARCH_PPC # include "ppc/intreadwrite.h" #endif /* * Define AV_[RW]N helper macros to simplify definitions not provided * by per-arch headers. */ #if defined(__GNUC__) struct unaligned_64 { uint64_t l; } __attribute__((packed)); struct unaligned_32 { uint32_t l; } __attribute__((packed)); struct unaligned_16 { uint16_t l; } __attribute__((packed)); # define AV_RN(s, p) (((const struct unaligned_##s *) (p))->l) # define AV_WN(s, p, v) (((struct unaligned_##s *) (p))->l) = (v) #elif defined(__DECC) # define AV_RN(s, p) (*((const __unaligned uint##s##_t*)(p))) # define AV_WN(s, p, v) *((__unaligned uint##s##_t*)(p)) = (v) #elif HAVE_FAST_UNALIGNED # define AV_RN(s, p) (*((const uint##s##_t*)(p))) # define AV_WN(s, p, v) *((uint##s##_t*)(p)) = (v) #else #ifndef AV_RB16 #define AV_RB16(x) ((((const uint8_t*)(x))[0] << 8) | \ ((const uint8_t*)(x))[1]) #endif #ifndef AV_WB16 #define AV_WB16(p, d) do { \ ((uint8_t*)(p))[1] = (d); \ ((uint8_t*)(p))[0] = (d)>>8; } while(0) #endif #ifndef AV_RL16 #define AV_RL16(x) ((((const uint8_t*)(x))[1] << 8) | \ ((const uint8_t*)(x))[0]) #endif #ifndef AV_WL16 #define AV_WL16(p, d) do { \ ((uint8_t*)(p))[0] = (d); \ ((uint8_t*)(p))[1] = (d)>>8; } while(0) #endif #ifndef AV_RB32 #define AV_RB32(x) ((((const uint8_t*)(x))[0] << 24) | \ (((const uint8_t*)(x))[1] << 16) | \ (((const uint8_t*)(x))[2] << 8) | \ ((const uint8_t*)(x))[3]) #endif #ifndef AV_WB32 #define AV_WB32(p, d) do { \ ((uint8_t*)(p))[3] = (d); \ ((uint8_t*)(p))[2] = (d)>>8; \ ((uint8_t*)(p))[1] = (d)>>16; \ ((uint8_t*)(p))[0] = (d)>>24; } while(0) #endif #ifndef AV_RL32 #define AV_RL32(x) ((((const uint8_t*)(x))[3] << 24) | \ (((const uint8_t*)(x))[2] << 16) | \ (((const uint8_t*)(x))[1] << 8) | \ ((const uint8_t*)(x))[0]) #endif #ifndef AV_WL32 #define AV_WL32(p, d) do { \ ((uint8_t*)(p))[0] = (d); \ ((uint8_t*)(p))[1] = (d)>>8; \ ((uint8_t*)(p))[2] = (d)>>16; \ ((uint8_t*)(p))[3] = (d)>>24; } while(0) #endif #ifndef AV_RB64 #define AV_RB64(x) (((uint64_t)((const uint8_t*)(x))[0] << 56) | \ ((uint64_t)((const uint8_t*)(x))[1] << 48) | \ ((uint64_t)((const uint8_t*)(x))[2] << 40) | \ ((uint64_t)((const uint8_t*)(x))[3] << 32) | \ ((uint64_t)((const uint8_t*)(x))[4] << 24) | \ ((uint64_t)((const uint8_t*)(x))[5] << 16) | \ ((uint64_t)((const uint8_t*)(x))[6] << 8) | \ (uint64_t)((const uint8_t*)(x))[7]) #endif #ifndef AV_WB64 #define AV_WB64(p, d) do { \ ((uint8_t*)(p))[7] = (d); \ ((uint8_t*)(p))[6] = (d)>>8; \ ((uint8_t*)(p))[5] = (d)>>16; \ ((uint8_t*)(p))[4] = (d)>>24; \ ((uint8_t*)(p))[3] = (d)>>32; \ ((uint8_t*)(p))[2] = (d)>>40; \ ((uint8_t*)(p))[1] = (d)>>48; \ ((uint8_t*)(p))[0] = (d)>>56; } while(0) #endif #ifndef AV_RL64 #define AV_RL64(x) (((uint64_t)((const uint8_t*)(x))[7] << 56) | \ ((uint64_t)((const uint8_t*)(x))[6] << 48) | \ ((uint64_t)((const uint8_t*)(x))[5] << 40) | \ ((uint64_t)((const uint8_t*)(x))[4] << 32) | \ ((uint64_t)((const uint8_t*)(x))[3] << 24) | \ ((uint64_t)((const uint8_t*)(x))[2] << 16) | \ ((uint64_t)((const uint8_t*)(x))[1] << 8) | \ (uint64_t)((const uint8_t*)(x))[0]) #endif #ifndef AV_WL64 #define AV_WL64(p, d) do { \ ((uint8_t*)(p))[0] = (d); \ ((uint8_t*)(p))[1] = (d)>>8; \ ((uint8_t*)(p))[2] = (d)>>16; \ ((uint8_t*)(p))[3] = (d)>>24; \ ((uint8_t*)(p))[4] = (d)>>32; \ ((uint8_t*)(p))[5] = (d)>>40; \ ((uint8_t*)(p))[6] = (d)>>48; \ ((uint8_t*)(p))[7] = (d)>>56; } while(0) #endif #ifdef WORDS_BIGENDIAN # define AV_RN(s, p) AV_RB##s(p) # define AV_WN(s, p, v) AV_WB##s(p, v) #else # define AV_RN(s, p) AV_RL##s(p) # define AV_WN(s, p, v) AV_WL##s(p, v) #endif #endif /* HAVE_FAST_UNALIGNED */ #ifndef AV_RN16 # define AV_RN16(p) AV_RN(16, p) #endif #ifndef AV_RN32 # define AV_RN32(p) AV_RN(32, p) #endif #ifndef AV_RN64 # define AV_RN64(p) AV_RN(64, p) #endif #ifndef AV_WN16 # define AV_WN16(p, v) AV_WN(16, p, v) #endif #ifndef AV_WN32 # define AV_WN32(p, v) AV_WN(32, p, v) #endif #ifndef AV_WN64 # define AV_WN64(p, v) AV_WN(64, p, v) #endif #ifdef WORDS_BIGENDIAN # define AV_RB(s, p) AV_RN(s, p) # define AV_WB(s, p, v) AV_WN(s, p, v) # define AV_RL(s, p) bswap_##s(AV_RN(s, p)) # define AV_WL(s, p, v) AV_WN(s, p, bswap_##s(v)) #else # define AV_RB(s, p) bswap_##s(AV_RN(s, p)) # define AV_WB(s, p, v) AV_WN(s, p, bswap_##s(v)) # define AV_RL(s, p) AV_RN(s, p) # define AV_WL(s, p, v) AV_WN(s, p, v) #endif #define AV_RB8(x) (((const uint8_t*)(x))[0]) #define AV_WB8(p, d) do { ((uint8_t*)(p))[0] = (d); } while(0) #define AV_RL8(x) AV_RB8(x) #define AV_WL8(p, d) AV_WB8(p, d) #ifndef AV_RB16 # define AV_RB16(p) AV_RB(16, p) #endif #ifndef AV_WB16 # define AV_WB16(p, v) AV_WB(16, p, v) #endif #ifndef AV_RL16 # define AV_RL16(p) AV_RL(16, p) #endif #ifndef AV_WL16 # define AV_WL16(p, v) AV_WL(16, p, v) #endif #ifndef AV_RB32 # define AV_RB32(p) AV_RB(32, p) #endif #ifndef AV_WB32 # define AV_WB32(p, v) AV_WB(32, p, v) #endif #ifndef AV_RL32 # define AV_RL32(p) AV_RL(32, p) #endif #ifndef AV_WL32 # define AV_WL32(p, v) AV_WL(32, p, v) #endif #ifndef AV_RB64 # define AV_RB64(p) AV_RB(64, p) #endif #ifndef AV_WB64 # define AV_WB64(p, v) AV_WB(64, p, v) #endif #ifndef AV_RL64 # define AV_RL64(p) AV_RL(64, p) #endif #ifndef AV_WL64 # define AV_WL64(p, v) AV_WL(64, p, v) #endif #define AV_RB24(x) ((((const uint8_t*)(x))[0] << 16) | \ (((const uint8_t*)(x))[1] << 8) | \ ((const uint8_t*)(x))[2]) #define AV_WB24(p, d) do { \ ((uint8_t*)(p))[2] = (d); \ ((uint8_t*)(p))[1] = (d)>>8; \ ((uint8_t*)(p))[0] = (d)>>16; } while(0) #define AV_RL24(x) ((((const uint8_t*)(x))[2] << 16) | \ (((const uint8_t*)(x))[1] << 8) | \ ((const uint8_t*)(x))[0]) #define AV_WL24(p, d) do { \ ((uint8_t*)(p))[0] = (d); \ ((uint8_t*)(p))[1] = (d)>>8; \ ((uint8_t*)(p))[2] = (d)>>16; } while(0) #endif /* AVUTIL_INTREADWRITE_H */