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author | Michael Niedermayer <michaelni@gmx.at> | 2004-06-06 03:45:53 +0000 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2004-06-06 03:45:53 +0000 |
commit | da9b170c6f06184a5114dc66afb8385cd0ffff83 (patch) | |
tree | 5c0001fa589306f13cbc36f69a71a6a617101f31 /libavcodec | |
parent | 940aed50ed1b1920d5363fa63f7e2c5d6e823817 (diff) | |
download | ffmpeg-da9b170c6f06184a5114dc66afb8385cd0ffff83.tar.gz |
optional and disabled by default memalign hack for SSE/SSE2 on that alternative OS
Originally committed as revision 3199 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec')
-rw-r--r-- | libavcodec/mem.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/libavcodec/mem.c b/libavcodec/mem.c index c5ca166d33..35c8305033 100644 --- a/libavcodec/mem.c +++ b/libavcodec/mem.c @@ -46,7 +46,13 @@ void *av_malloc(unsigned int size) { void *ptr; -#if defined (HAVE_MEMALIGN) +#ifdef MEMALIGN_HACK + int diff; + ptr = malloc(size+16+1); + diff= ((-(int)ptr - 1)&15) + 1; + ptr += diff; + ((char*)ptr)[-1]= diff; +#elif defined (HAVE_MEMALIGN) ptr = memalign(16,size); /* Why 64? Indeed, we should align it: @@ -87,7 +93,13 @@ void *av_malloc(unsigned int size) */ void *av_realloc(void *ptr, unsigned int size) { +#ifdef MEMALIGN_HACK + //FIXME this isnt aligned correctly though it probably isnt needed + int diff= ptr ? ((char*)ptr)[-1] : 0; + return realloc(ptr - diff, size + diff) + diff; +#else return realloc(ptr, size); +#endif } /* NOTE: ptr = NULL is explicetly allowed */ @@ -95,6 +107,10 @@ void av_free(void *ptr) { /* XXX: this test should not be needed on most libcs */ if (ptr) +#ifdef MEMALIGN_HACK + free(ptr - ((char*)ptr)[-1]); +#else free(ptr); +#endif } |