diff options
Diffstat (limited to 'libswscale/utils.c')
| -rw-r--r-- | libswscale/utils.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/libswscale/utils.c b/libswscale/utils.c index 3310d78dc7..24058c3b0c 100644 --- a/libswscale/utils.c +++ b/libswscale/utils.c @@ -1070,6 +1070,8 @@ av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter, } } +#define USE_MMAP (HAVE_MMAP && HAVE_MPROTECT && defined MAP_ANONYMOUS) + /* precalculate horizontal scaler filter coefficients */ { #if HAVE_MMXEXT_INLINE @@ -1080,7 +1082,7 @@ av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter, c->chrMmx2FilterCodeSize = initMMX2HScaler(c->chrDstW, c->chrXInc, NULL, NULL, NULL, 4); -#ifdef MAP_ANONYMOUS +#if USE_MMAP c->lumMmx2FilterCode = mmap(NULL, c->lumMmx2FilterCodeSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); c->chrMmx2FilterCode = mmap(NULL, c->chrMmx2FilterCodeSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); #elif HAVE_VIRTUALALLOC @@ -1111,7 +1113,7 @@ av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter, initMMX2HScaler(c->chrDstW, c->chrXInc, c->chrMmx2FilterCode, c->hChrFilter, (uint32_t*)c->hChrFilterPos, 4); -#ifdef MAP_ANONYMOUS +#if USE_MMAP mprotect(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize, PROT_EXEC | PROT_READ); mprotect(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize, PROT_EXEC | PROT_READ); #endif @@ -1698,7 +1700,7 @@ void sws_freeContext(SwsContext *c) av_freep(&c->hChrFilterPos); #if HAVE_MMX_INLINE -#ifdef MAP_ANONYMOUS +#if USE_MMAP if (c->lumMmx2FilterCode) munmap(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize); if (c->chrMmx2FilterCode) |