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echo-cancel: Handle alignment requirement manually

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PA_ALIGNED can't always guarantee that the alignment we want (the GCC
man page suggests that the linker might not be able to meet the
alignment requirements we desire). Instead, we now allocate some extra
memory and guaratee that the alignment we require is met.
This commit is contained in:
Arun Raghavan 2011-05-09 13:40:24 +05:30 • committed by Colin Guthrie
parent 8eed569614
commit e678beaf14
2 changed files with 11 additions and 4 deletions
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12
src/modules/echo-cancel/adrian-aec.c
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@ -12,6 +12,7 @@
#include <math.h>
#include <string.h>
#include <stdint.h>
#include <pulse/xmalloc.h>
@ -70,7 +71,7 @@ AEC* AEC_init(int RATE, int have_vector)
a->hangover = 0;
memset(a->x, 0, sizeof(a->x));
memset(a->xf, 0, sizeof(a->xf));
memset(a->w, 0, sizeof(a->w));
memset(a->w_arr, 0, sizeof(a->w_arr));
a->j = NLMS_EXT;
a->delta = 0.0f;
AEC_setambient(a, NoiseFloor);
@ -89,10 +90,15 @@ AEC* AEC_init(int RATE, int have_vector)
a->dumpcnt = 0;
memset(a->ws, 0, sizeof(a->ws));
if (have_vector)
if (have_vector) {
/* Get a 16-byte aligned location */
a->w = (REAL *) (((uintptr_t) a->w_arr) + (((uintptr_t) a->w_arr) % 16));
a->dotp = dotp_sse;
else
} else {
/* We don't care about alignment, just use the array as-is */
a->w = a->w_arr;
a->dotp = dotp;
}
return a;
}