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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/aes.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/aes.c')
| -rw-r--r-- | libavutil/aes.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libavutil/aes.c b/libavutil/aes.c index 6803c7190d..4656a48634 100644 --- a/libavutil/aes.c +++ b/libavutil/aes.c @@ -39,7 +39,14 @@ typedef struct AVAES { int rounds; } AVAES; +#if FF_API_CONTEXT_SIZE const int av_aes_size= sizeof(AVAES); +#endif + +struct AVAES *av_aes_alloc(void) +{ + return av_mallocz(sizeof(struct AVAES)); +} static const uint8_t rcon[10] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36 |