mirror of https://git.ffmpeg.org/ffmpeg.git
59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/*
|
|
* 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 FFMPEG_BYTESTREAM_H
|
|
#define FFMPEG_BYTESTREAM_H
|
|
|
|
#define DEF(name, bytes, read, write)\
|
|
static av_always_inline unsigned int bytestream_get_ ## name(uint8_t **b){\
|
|
(*b) += bytes;\
|
|
return read(*b - bytes);\
|
|
}\
|
|
static av_always_inline void bytestream_put_ ##name(uint8_t **b, const unsigned int value){\
|
|
write(*b, value);\
|
|
(*b) += bytes;\
|
|
};
|
|
|
|
DEF(le32, 4, AV_RL32, AV_WL32)
|
|
DEF(le24, 3, AV_RL24, AV_WL24)
|
|
DEF(le16, 2, AV_RL16, AV_WL16)
|
|
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
|
|
|
|
static av_always_inline unsigned int bytestream_get_buffer(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 /* FFMPEG_BYTESTREAM_H */
|