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audioconvert: use spa_write_unaligned

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Use a macro to write out unaligned data to avoid ASAN errors.

See #3572
This commit is contained in:
Wim Taymans 2023-10-16 12:21:33 +02:00
parent 7d5b809b19
commit 16ad067cc9
2 changed files with 52 additions and 51 deletions
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20
spa/plugins/audioconvert/fmt-ops-sse2.c
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@ -121,6 +121,11 @@ __extension__ ({ \
_val; \
})
#define spa_write_unaligned(ptr, type, val) \
__extension__ ({ \
__typeof__(type) _val = (val); \
memcpy((ptr), &_val, sizeof(_val)); \
})
void
conv_s24_to_f32d_1s_sse2(void *data, void * SPA_RESTRICT dst[], const void * SPA_RESTRICT src,
uint32_t n_channels, uint32_t n_samples)
@ -1155,15 +1160,14 @@ conv_f32d_to_s16_2s_sse2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
t[1] = _mm_packs_epi32(t[1], t[1]);
out[0] = _mm_unpacklo_epi16(t[0], t[1]);
out[1] = _mm_shuffle_epi32(out[0], _MM_SHUFFLE(0, 3, 2, 1));
out[2] = _mm_shuffle_epi32(out[0], _MM_SHUFFLE(1, 0, 3, 2));
out[3] = _mm_shuffle_epi32(out[0], _MM_SHUFFLE(2, 1, 0, 3));
d[0*n_channels+0] = _mm_extract_epi16(out[0], 0);
d[0*n_channels+1] = _mm_extract_epi16(out[0], 1);
d[1*n_channels+0] = _mm_extract_epi16(out[0], 2);
d[1*n_channels+1] = _mm_extract_epi16(out[0], 3);
d[2*n_channels+0] = _mm_extract_epi16(out[0], 4);
d[2*n_channels+1] = _mm_extract_epi16(out[0], 5);
d[3*n_channels+0] = _mm_extract_epi16(out[0], 6);
d[3*n_channels+1] = _mm_extract_epi16(out[0], 7);
spa_write_unaligned(d + 0*n_channels, uint32_t, _mm_cvtsi128_si32(out[0]));
spa_write_unaligned(d + 1*n_channels, uint32_t, _mm_cvtsi128_si32(out[1]));
spa_write_unaligned(d + 2*n_channels, uint32_t, _mm_cvtsi128_si32(out[2]));
spa_write_unaligned(d + 3*n_channels, uint32_t, _mm_cvtsi128_si32(out[3]));
d += 4*n_channels;
}
for(; n < n_samples; n++) {