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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-10-25 13:15:58 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-10-25 13:15:58 +0200 |
| commit | aa604e8e33ae06f3a106e44fff798fdd70d77230 (patch) | |
| tree | de1f5670244e74d90e97b8dc69f054768c363959 /libavutil/mem.h | |
| parent | d312ffdd79bd22b5a051790c993eda6b1366cdfc (diff) | |
| parent | 2a91ada8282f18d2807abee5188225bba1b19bda (diff) | |
| download | ffmpeg-aa604e8e33ae06f3a106e44fff798fdd70d77230.tar.gz | |
Merge remote-tracking branch 'qatar/master'
* qatar/master:
avutil: Make LZO decoder code configure-time selectable
avutil: Move memcpy_backptr() to mem.c
configure: detect parisc64 automatically
configure: detect ppc64 automatically
configure: detect mips64 automatically
configure: generalise 64-bit test
smoothstreamingenc: Don't assume streams start from timestamp 0
Conflicts:
configure
libavutil/Makefile
libavutil/lzo.c
libavutil/lzo.h
libavutil/mem.c
libavutil/mem.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavutil/mem.h')
| -rw-r--r-- | libavutil/mem.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libavutil/mem.h b/libavutil/mem.h index c2f011552d..ced9453869 100644 --- a/libavutil/mem.h +++ b/libavutil/mem.h @@ -27,6 +27,7 @@ #define AVUTIL_MEM_H #include <limits.h> +#include <stdint.h> #include "attributes.h" #include "error.h" @@ -217,6 +218,17 @@ static inline int av_size_mult(size_t a, size_t b, size_t *r) void av_max_alloc(size_t max); /** + * @brief deliberately overlapping memcpy implementation + * @param dst destination buffer + * @param back how many bytes back we start (the initial size of the overlapping window), must be > 0 + * @param cnt number of bytes to copy, must be >= 0 + * + * cnt > back is valid, this will copy the bytes we just copied, + * thus creating a repeating pattern with a period length of back. + */ +void av_memcpy_backptr(uint8_t *dst, int back, int cnt); + +/** * @} */ |