mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
2.2 KiB
71 lines
2.2 KiB
/* |
|
* 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 */
|
|
|