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Small optimizations to f32 -> s16 conversion.

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David Reid
2018-05-30 20:06:09 +10:00
parent ec3f56d8e7
commit 10f8649258
2 changed files with 5 additions and 4 deletions
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mini_al.h
+3 -2
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@@ -18806,7 +18806,7 @@ void mal_pcm_f32_to_s16__sse2(void* dst, const void* src, mal_uint64 count, mal_
x0 = _mm_mul_ps(x0, _mm_set1_ps(32767.0f)); x0 = _mm_mul_ps(x0, _mm_set1_ps(32767.0f));
x1 = _mm_mul_ps(x1, _mm_set1_ps(32767.0f)); x1 = _mm_mul_ps(x1, _mm_set1_ps(32767.0f));
*((__m128i*)(dst_s16 + i)) = _mm_packs_epi32(_mm_cvttps_epi32(x0), _mm_cvttps_epi32(x1)); _mm_stream_si128(((__m128i*)(dst_s16 + i)), _mm_packs_epi32(_mm_cvttps_epi32(x0), _mm_cvttps_epi32(x1)));
i += 8; i += 8;
} }
@@ -18906,7 +18906,8 @@ void mal_pcm_f32_to_s16__avx2(void* dst, const void* src, mal_uint64 count, mal_
__m256i p1 = _mm256_permute2x128_si256(i0, i1, 1 | 48); __m256i p1 = _mm256_permute2x128_si256(i0, i1, 1 | 48);
__m256i r = _mm256_packs_epi32(p0, p1); __m256i r = _mm256_packs_epi32(p0, p1);
*((__m256i*)(dst_s16 + i)) = r; _mm256_stream_si256(((__m256i*)(dst_s16 + i)), r);
i += 16; i += 16;
} }
tests/mal_profiling.c
+1 -1
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@@ -580,7 +580,7 @@ int do_profiling__format_conversion__profile_individual(mal_format formatIn, mal
int do_profiling__format_conversion__profile_set(mal_format formatIn, mal_format formatOut, mal_dither_mode ditherMode) int do_profiling__format_conversion__profile_set(mal_format formatIn, mal_format formatOut, mal_dither_mode ditherMode)
{ {
// Generate our base data to begin with. This is generated from an f32 sine wave which is converted to formatIn. That then becomes our base data. // Generate our base data to begin with. This is generated from an f32 sine wave which is converted to formatIn. That then becomes our base data.
mal_uint32 sampleCount = 1000000; mal_uint32 sampleCount = 10000000;
float* pSourceData = (float*)mal_aligned_malloc(sampleCount*sizeof(*pSourceData), MAL_SIMD_ALIGNMENT); float* pSourceData = (float*)mal_aligned_malloc(sampleCount*sizeof(*pSourceData), MAL_SIMD_ALIGNMENT);
if (pSourceData == NULL) { if (pSourceData == NULL) {