/*
  * Bytestream functions
  * copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr>
  *
  * 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 AVCODEC_BYTESTREAM_H
 #define AVCODEC_BYTESTREAM_H

 #include <string.h>

 #include "libavutil/common.h"

 #include "libavutil/intreadwrite.h"

 #define DEF_T(type, name, bytes, read, write)                             \

 static av_always_inline type bytestream_get_ ## name(const uint8_t **b){\

     (*b) += bytes;\
     return read(*b - bytes);\
 }\

 static av_always_inline void bytestream_put_ ##name(uint8_t **b, const type value){\

     write(*b, value);\
     (*b) += bytes;\

 }

 #define DEF(name, bytes, read, write) \
     DEF_T(unsigned int, name, bytes, read, write)
 #define DEF64(name, bytes, read, write) \
     DEF_T(uint64_t, name, bytes, read, write)
 
 DEF64(le64, 8, AV_RL64, AV_WL64)

 DEF  (le32, 4, AV_RL32, AV_WL32)
 DEF  (le24, 3, AV_RL24, AV_WL24)
 DEF  (le16, 2, AV_RL16, AV_WL16)

 DEF64(be64, 8, AV_RB64, AV_WB64)

 DEF  (be32, 4, AV_RB32, AV_WB32)
 DEF  (be24, 3, AV_RB24, AV_WB24)
 DEF  (be16, 2, AV_RB16, AV_WB16)
 DEF  (byte, 1, AV_RB8 , AV_WB8 )

 #undef DEF

 #undef DEF64
 #undef DEF_T

 static av_always_inline unsigned int bytestream_get_buffer(const uint8_t **b, uint8_t *dst, unsigned int size)

 {
     memcpy(dst, *b, size);
     (*b) += size;
     return size;
 }
 

 static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)

 {
     memcpy(*b, src, size);
     (*b) += size;
 }
 

 #endif /* AVCODEC_BYTESTREAM_H */