3 * copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #ifndef AVCODEC_BYTESTREAM_H
23 #define AVCODEC_BYTESTREAM_H
25 #include "libavutil/common.h"
26 #include "libavutil/intreadwrite.h"
28 #define DEF_T(type, name, bytes, read, write) \
29 static av_always_inline type bytestream_get_ ## name(const uint8_t **b){\
31 return read(*b - bytes);\
33 static av_always_inline void bytestream_put_ ##name(uint8_t **b, const type value){\
38 #define DEF(name, bytes, read, write) \
39 DEF_T(unsigned int, name, bytes, read, write)
40 #define DEF64(name, bytes, read, write) \
41 DEF_T(uint64_t, name, bytes, read, write)
43 DEF64(le64, 8, AV_RL64, AV_WL64)
44 DEF (le32, 4, AV_RL32, AV_WL32)
45 DEF (le24, 3, AV_RL24, AV_WL24)
46 DEF (le16, 2, AV_RL16, AV_WL16)
47 DEF64(be64, 8, AV_RB64, AV_WB64)
48 DEF (be32, 4, AV_RB32, AV_WB32)
49 DEF (be24, 3, AV_RB24, AV_WB24)
50 DEF (be16, 2, AV_RB16, AV_WB16)
51 DEF (byte, 1, AV_RB8 , AV_WB8 )
57 static av_always_inline unsigned int bytestream_get_buffer(const uint8_t **b, uint8_t *dst, unsigned int size)
59 memcpy(dst, *b, size);
64 static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
66 memcpy(*b, src, size);
70 #endif /* AVCODEC_BYTESTREAM_H */