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| author | Martin Storsjö <martin@martin.st> | 2012-10-11 15:08:04 +0300 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2012-10-11 23:35:27 +0300 |
| commit | 9a92aea27bad2f5603ca85e0d0716c679a6b686c (patch) | |
| tree | a38dae27b4c15cc4a75c0a3745351b8c5b3fd122 /libavutil/md5.c | |
| parent | fb32f31af76ce784c86c59c86c28e5653e223610 (diff) | |
| download | ffmpeg-9a92aea27bad2f5603ca85e0d0716c679a6b686c.tar.gz | |
avutil: Add functions for allocating opaque contexts for algorithms
The current API where the plain size is exposed is not of much
use - in most cases it is allocated dynamically anyway.
If allocated e.g. on the stack via an uint8_t array, there's no
guarantee that the struct's members are aligned properly (unless
the array is overallocated and the opaque pointer within it
manually aligned to some unspecified alignment).
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavutil/md5.c')
| -rw-r--r-- | libavutil/md5.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libavutil/md5.c b/libavutil/md5.c index ca0e598d2e..93a91d7812 100644 --- a/libavutil/md5.c +++ b/libavutil/md5.c @@ -34,6 +34,7 @@ #include "bswap.h" #include "intreadwrite.h" #include "md5.h" +#include "mem.h" typedef struct AVMD5{ uint64_t len; @@ -41,7 +42,14 @@ typedef struct AVMD5{ uint32_t ABCD[4]; } AVMD5; +#if FF_API_CONTEXT_SIZE const int av_md5_size = sizeof(AVMD5); +#endif + +struct AVMD5 *av_md5_alloc(void) +{ + return av_mallocz(sizeof(struct AVMD5)); +} static const uint8_t S[4][4] = { { 7, 12, 17, 22 }, /* round 1 */ |