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https://gitlab.freedesktop.org/pipewire/pipewire.git
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audioconvert: somewhat avoid precision loss in F32 to S32 conversion
At the very least, we should go through s25_32 intermediate instead of s24_32, to avoid needlessly loosing 1 LSB precision bit. FIXME: the noise codepath is not covered with tests.
This commit is contained in:
Roman Lebedev
parent
2a035ac49e
commit
175d533b56
4 changed files with 66 additions and 71 deletions
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@ -490,9 +490,9 @@ conv_f32d_to_s32_1s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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uint32_t n, unrolled;
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__m128 in[1];
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__m128i out[4];
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__m128 scale = _mm_set1_ps(S24_SCALE);
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__m128 int_max = _mm_set1_ps(S24_MAX);
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__m128 int_min = _mm_set1_ps(S24_MIN);
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__m128 scale = _mm_set1_ps(S25_SCALE);
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__m128 int_max = _mm_set1_ps(S25_MAX);
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__m128 int_min = _mm_set1_ps(S25_MIN);
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if (SPA_IS_ALIGNED(s0, 16))
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unrolled = n_samples & ~3;
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@ -503,7 +503,7 @@ conv_f32d_to_s32_1s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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in[0] = _mm_mul_ps(_mm_load_ps(&s0[n]), scale);
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in[0] = _MM_CLAMP_PS(in[0], int_min, int_max);
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out[0] = _mm_cvtps_epi32(in[0]);
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out[0] = _mm_slli_epi32(out[0], 8);
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out[0] = _mm_slli_epi32(out[0], 7);
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out[1] = _mm_shuffle_epi32(out[0], _MM_SHUFFLE(0, 3, 2, 1));
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out[2] = _mm_shuffle_epi32(out[0], _MM_SHUFFLE(1, 0, 3, 2));
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out[3] = _mm_shuffle_epi32(out[0], _MM_SHUFFLE(2, 1, 0, 3));
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@ -518,7 +518,7 @@ conv_f32d_to_s32_1s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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in[0] = _mm_load_ss(&s0[n]);
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in[0] = _mm_mul_ss(in[0], scale);
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in[0] = _MM_CLAMP_SS(in[0], int_min, int_max);
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*d = _mm_cvtss_si32(in[0]) << 8;
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*d = _mm_cvtss_si32(in[0]) << 7;
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d += n_channels;
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}
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}
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@ -538,12 +538,12 @@ conv_f32d_to_s32_2s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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uint32_t n, unrolled;
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__m256 in[2];
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__m256i out[2], t[2];
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__m256 scale = _mm256_set1_ps(S24_SCALE);
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__m256 int_min = _mm256_set1_ps(S24_MIN);
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__m256 int_max = _mm256_set1_ps(S24_MAX);
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__m256 scale = _mm256_set1_ps(S25_SCALE);
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__m256 int_min = _mm256_set1_ps(S25_MIN);
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__m256 int_max = _mm256_set1_ps(S25_MAX);
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if (SPA_IS_ALIGNED(s0, 32) &&
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SPA_IS_ALIGNED(s1, 32))
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SPA_IS_ALIGNED(s1, 32))
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unrolled = n_samples & ~7;
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else
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unrolled = 0;
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@ -557,8 +557,8 @@ conv_f32d_to_s32_2s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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out[0] = _mm256_cvtps_epi32(in[0]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
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out[1] = _mm256_cvtps_epi32(in[1]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
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out[0] = _mm256_slli_epi32(out[0], 8);
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out[1] = _mm256_slli_epi32(out[1], 8);
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out[0] = _mm256_slli_epi32(out[0], 7);
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out[1] = _mm256_slli_epi32(out[1], 7);
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t[0] = _mm256_unpacklo_epi32(out[0], out[1]); /* a0 b0 a1 b1 a4 b4 a5 b5 */
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t[1] = _mm256_unpackhi_epi32(out[0], out[1]); /* a2 b2 a3 b3 a6 b6 a7 b7 */
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@ -587,9 +587,9 @@ conv_f32d_to_s32_2s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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for(; n < n_samples; n++) {
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__m128 in[2];
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__m128i out[2];
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__m128 scale = _mm_set1_ps(S24_SCALE);
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__m128 int_min = _mm_set1_ps(S24_MIN);
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__m128 int_max = _mm_set1_ps(S24_MAX);
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__m128 scale = _mm_set1_ps(S25_SCALE);
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__m128 int_min = _mm_set1_ps(S25_MIN);
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__m128 int_max = _mm_set1_ps(S25_MAX);
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in[0] = _mm_load_ss(&s0[n]);
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in[1] = _mm_load_ss(&s1[n]);
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@ -599,7 +599,7 @@ conv_f32d_to_s32_2s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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in[0] = _mm_mul_ps(in[0], scale);
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in[0] = _MM_CLAMP_PS(in[0], int_min, int_max);
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out[0] = _mm_cvtps_epi32(in[0]);
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out[0] = _mm_slli_epi32(out[0], 8);
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out[0] = _mm_slli_epi32(out[0], 7);
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_mm_storel_epi64((__m128i*)d, out[0]);
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d += n_channels;
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}
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@ -614,14 +614,14 @@ conv_f32d_to_s32_4s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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uint32_t n, unrolled;
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__m256 in[4];
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__m256i out[4], t[4];
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__m256 scale = _mm256_set1_ps(S24_SCALE);
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__m256 int_min = _mm256_set1_ps(S24_MIN);
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__m256 int_max = _mm256_set1_ps(S24_MAX);
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__m256 scale = _mm256_set1_ps(S25_SCALE);
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__m256 int_min = _mm256_set1_ps(S25_MIN);
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__m256 int_max = _mm256_set1_ps(S25_MAX);
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if (SPA_IS_ALIGNED(s0, 32) &&
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SPA_IS_ALIGNED(s1, 32) &&
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SPA_IS_ALIGNED(s2, 32) &&
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SPA_IS_ALIGNED(s3, 32))
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SPA_IS_ALIGNED(s1, 32) &&
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SPA_IS_ALIGNED(s2, 32) &&
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SPA_IS_ALIGNED(s3, 32))
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unrolled = n_samples & ~7;
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else
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unrolled = 0;
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@ -641,10 +641,10 @@ conv_f32d_to_s32_4s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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out[1] = _mm256_cvtps_epi32(in[1]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
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out[2] = _mm256_cvtps_epi32(in[2]); /* c0 c1 c2 c3 c4 c5 c6 c7 */
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out[3] = _mm256_cvtps_epi32(in[3]); /* d0 d1 d2 d3 d4 d5 d6 d7 */
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out[0] = _mm256_slli_epi32(out[0], 8);
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out[1] = _mm256_slli_epi32(out[1], 8);
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out[2] = _mm256_slli_epi32(out[2], 8);
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out[3] = _mm256_slli_epi32(out[3], 8);
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out[0] = _mm256_slli_epi32(out[0], 7);
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out[1] = _mm256_slli_epi32(out[1], 7);
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out[2] = _mm256_slli_epi32(out[2], 7);
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out[3] = _mm256_slli_epi32(out[3], 7);
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t[0] = _mm256_unpacklo_epi32(out[0], out[1]); /* a0 b0 a1 b1 a4 b4 a5 b5 */
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t[1] = _mm256_unpackhi_epi32(out[0], out[1]); /* a2 b2 a3 b3 a6 b6 a7 b7 */
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@ -669,9 +669,9 @@ conv_f32d_to_s32_4s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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for(; n < n_samples; n++) {
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__m128 in[4];
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__m128i out[4];
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__m128 scale = _mm_set1_ps(S24_SCALE);
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__m128 int_min = _mm_set1_ps(S24_MIN);
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__m128 int_max = _mm_set1_ps(S24_MAX);
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__m128 scale = _mm_set1_ps(S25_SCALE);
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__m128 int_min = _mm_set1_ps(S25_MIN);
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__m128 int_max = _mm_set1_ps(S25_MAX);
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in[0] = _mm_load_ss(&s0[n]);
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in[1] = _mm_load_ss(&s1[n]);
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@ -685,7 +685,7 @@ conv_f32d_to_s32_4s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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in[0] = _mm_mul_ps(in[0], scale);
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in[0] = _MM_CLAMP_PS(in[0], int_min, int_max);
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out[0] = _mm_cvtps_epi32(in[0]);
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out[0] = _mm_slli_epi32(out[0], 8);
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out[0] = _mm_slli_epi32(out[0], 7);
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_mm_storeu_si128((__m128i*)d, out[0]);
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d += n_channels;
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}
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@ -381,9 +381,9 @@ conv_f32d_to_s32_1s_sse2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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uint32_t n, unrolled;
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__m128 in[1];
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__m128i out[4];
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__m128 scale = _mm_set1_ps(S24_SCALE);
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__m128 int_min = _mm_set1_ps(S24_MIN);
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__m128 int_max = _mm_set1_ps(S24_MAX);
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__m128 scale = _mm_set1_ps(S25_SCALE);
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__m128 int_min = _mm_set1_ps(S25_MIN);
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__m128 int_max = _mm_set1_ps(S25_MAX);
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if (SPA_IS_ALIGNED(s0, 16))
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unrolled = n_samples & ~3;
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@ -394,7 +394,7 @@ conv_f32d_to_s32_1s_sse2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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in[0] = _mm_mul_ps(_mm_load_ps(&s0[n]), scale);
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in[0] = _MM_CLAMP_PS(in[0], int_min, int_max);
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out[0] = _mm_cvtps_epi32(in[0]);
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out[0] = _mm_slli_epi32(out[0], 8);
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out[0] = _mm_slli_epi32(out[0], 7);
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out[1] = _mm_shuffle_epi32(out[0], _MM_SHUFFLE(0, 3, 2, 1));
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out[2] = _mm_shuffle_epi32(out[0], _MM_SHUFFLE(1, 0, 3, 2));
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out[3] = _mm_shuffle_epi32(out[0], _MM_SHUFFLE(2, 1, 0, 3));
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@ -409,7 +409,7 @@ conv_f32d_to_s32_1s_sse2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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in[0] = _mm_load_ss(&s0[n]);
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in[0] = _mm_mul_ss(in[0], scale);
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in[0] = _MM_CLAMP_SS(in[0], int_min, int_max);
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*d = _mm_cvtss_si32(in[0]) << 8;
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*d = _mm_cvtss_si32(in[0]) << 7;
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d += n_channels;
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}
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}
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@ -423,12 +423,12 @@ conv_f32d_to_s32_2s_sse2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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uint32_t n, unrolled;
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__m128 in[2];
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__m128i out[2], t[2];
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__m128 scale = _mm_set1_ps(S24_SCALE);
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__m128 int_min = _mm_set1_ps(S24_MIN);
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__m128 int_max = _mm_set1_ps(S24_MAX);
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__m128 scale = _mm_set1_ps(S25_SCALE);
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__m128 int_min = _mm_set1_ps(S25_MIN);
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__m128 int_max = _mm_set1_ps(S25_MAX);
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if (SPA_IS_ALIGNED(s0, 16) &&
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SPA_IS_ALIGNED(s1, 16))
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SPA_IS_ALIGNED(s1, 16))
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unrolled = n_samples & ~3;
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else
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unrolled = 0;
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@ -442,8 +442,8 @@ conv_f32d_to_s32_2s_sse2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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out[0] = _mm_cvtps_epi32(in[0]);
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out[1] = _mm_cvtps_epi32(in[1]);
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out[0] = _mm_slli_epi32(out[0], 8);
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out[1] = _mm_slli_epi32(out[1], 8);
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out[0] = _mm_slli_epi32(out[0], 7);
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out[1] = _mm_slli_epi32(out[1], 7);
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t[0] = _mm_unpacklo_epi32(out[0], out[1]);
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t[1] = _mm_unpackhi_epi32(out[0], out[1]);
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@ -463,7 +463,7 @@ conv_f32d_to_s32_2s_sse2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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in[0] = _mm_mul_ps(in[0], scale);
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in[0] = _MM_CLAMP_PS(in[0], int_min, int_max);
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out[0] = _mm_cvtps_epi32(in[0]);
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out[0] = _mm_slli_epi32(out[0], 8);
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out[0] = _mm_slli_epi32(out[0], 7);
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_mm_storel_epi64((__m128i*)d, out[0]);
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d += n_channels;
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}
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@ -478,14 +478,14 @@ conv_f32d_to_s32_4s_sse2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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uint32_t n, unrolled;
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__m128 in[4];
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__m128i out[4];
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__m128 scale = _mm_set1_ps(S24_SCALE);
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__m128 int_min = _mm_set1_ps(S24_MIN);
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__m128 int_max = _mm_set1_ps(S24_MAX);
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__m128 scale = _mm_set1_ps(S25_SCALE);
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__m128 int_min = _mm_set1_ps(S25_MIN);
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__m128 int_max = _mm_set1_ps(S25_MAX);
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if (SPA_IS_ALIGNED(s0, 16) &&
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SPA_IS_ALIGNED(s1, 16) &&
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SPA_IS_ALIGNED(s2, 16) &&
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SPA_IS_ALIGNED(s3, 16))
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SPA_IS_ALIGNED(s1, 16) &&
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SPA_IS_ALIGNED(s2, 16) &&
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SPA_IS_ALIGNED(s3, 16))
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unrolled = n_samples & ~3;
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else
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unrolled = 0;
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@ -507,10 +507,10 @@ conv_f32d_to_s32_4s_sse2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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out[1] = _mm_cvtps_epi32(in[1]);
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out[2] = _mm_cvtps_epi32(in[2]);
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out[3] = _mm_cvtps_epi32(in[3]);
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out[0] = _mm_slli_epi32(out[0], 8);
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out[1] = _mm_slli_epi32(out[1], 8);
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out[2] = _mm_slli_epi32(out[2], 8);
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out[3] = _mm_slli_epi32(out[3], 8);
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out[0] = _mm_slli_epi32(out[0], 7);
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out[1] = _mm_slli_epi32(out[1], 7);
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out[2] = _mm_slli_epi32(out[2], 7);
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out[3] = _mm_slli_epi32(out[3], 7);
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_mm_storeu_si128((__m128i*)(d + 0*n_channels), out[0]);
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_mm_storeu_si128((__m128i*)(d + 1*n_channels), out[1]);
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@ -531,7 +531,7 @@ conv_f32d_to_s32_4s_sse2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
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in[0] = _mm_mul_ps(in[0], scale);
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in[0] = _MM_CLAMP_PS(in[0], int_min, int_max);
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out[0] = _mm_cvtps_epi32(in[0]);
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out[0] = _mm_slli_epi32(out[0], 8);
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out[0] = _mm_slli_epi32(out[0], 7);
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_mm_storeu_si128((__m128i*)d, out[0]);
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d += n_channels;
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}
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@ -620,6 +620,7 @@ void conv_noise_tri_hf_sse2(struct convert *conv, float *noise, uint32_t n_sampl
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_mm_store_si128((__m128i*)p, old[0]);
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}
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// FIXME: this function is not covered with tests.
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static void
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conv_f32d_to_s32_1s_noise_sse2(struct convert *conv, void * SPA_RESTRICT dst, const void * SPA_RESTRICT src,
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float *noise, uint32_t n_channels, uint32_t n_samples)
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@ -629,9 +630,9 @@ conv_f32d_to_s32_1s_noise_sse2(struct convert *conv, void * SPA_RESTRICT dst, co
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uint32_t n, unrolled;
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__m128 in[1];
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__m128i out[4];
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__m128 scale = _mm_set1_ps(S24_SCALE);
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__m128 int_min = _mm_set1_ps(S24_MIN);
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__m128 int_max = _mm_set1_ps(S24_MAX);
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__m128 scale = _mm_set1_ps(S25_SCALE);
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__m128 int_min = _mm_set1_ps(S25_MIN);
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__m128 int_max = _mm_set1_ps(S25_MAX);
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if (SPA_IS_ALIGNED(s, 16))
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unrolled = n_samples & ~3;
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@ -643,7 +644,7 @@ conv_f32d_to_s32_1s_noise_sse2(struct convert *conv, void * SPA_RESTRICT dst, co
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in[0] = _mm_add_ps(in[0], _mm_load_ps(&noise[n]));
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in[0] = _MM_CLAMP_PS(in[0], int_min, int_max);
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out[0] = _mm_cvtps_epi32(in[0]);
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out[0] = _mm_slli_epi32(out[0], 8);
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out[0] = _mm_slli_epi32(out[0], 7);
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out[1] = _mm_shuffle_epi32(out[0], _MM_SHUFFLE(0, 3, 2, 1));
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out[2] = _mm_shuffle_epi32(out[0], _MM_SHUFFLE(1, 0, 3, 2));
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out[3] = _mm_shuffle_epi32(out[0], _MM_SHUFFLE(2, 1, 0, 3));
|
||||
|
|
@ -659,7 +660,7 @@ conv_f32d_to_s32_1s_noise_sse2(struct convert *conv, void * SPA_RESTRICT dst, co
|
|||
in[0] = _mm_mul_ss(in[0], scale);
|
||||
in[0] = _mm_add_ss(in[0], _mm_load_ss(&noise[n]));
|
||||
in[0] = _MM_CLAMP_SS(in[0], int_min, int_max);
|
||||
*d = _mm_cvtss_si32(in[0]) << 8;
|
||||
*d = _mm_cvtss_si32(in[0]) << 7;
|
||||
d += n_channels;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -123,8 +123,8 @@
|
|||
#define S32_MAX (S24_MAX * 256)
|
||||
#define S32_TO_F32(v) ITOF(int32_t, S32_TO_S24_32(v), S24_SCALE, 0.0f)
|
||||
#define S32S_TO_F32(v) S32_TO_F32(bswap_32(v))
|
||||
#define F32_TO_S32(v) S24_32_TO_S32(F32_TO_S24_32(v))
|
||||
#define F32_TO_S32_D(v,d) S24_32_TO_S32(F32_TO_S24_32_D(v,d))
|
||||
#define F32_TO_S32_D(v,d) S25_32_TO_S32(F32_TO_S25_32_D(v,d))
|
||||
#define F32_TO_S32(v) F32_TO_S32_D(v, 0.0f)
|
||||
#define F32_TO_S32S(v) bswap_32(F32_TO_S32(v))
|
||||
#define F32_TO_S32S_D(v,d) bswap_32(F32_TO_S32_D(v,d))
|
||||
|
||||
|
|
|
|||
|
|
@ -298,16 +298,15 @@ static void test_f32_s32(void)
|
|||
1.0f/0x40000000, -1.0f/0x40000000, 1.0f/0x80000000, -1.0f/0x80000000,
|
||||
1.0f/0x100000000, -1.0f/0x100000000, 1.0f/0x200000000, -1.0f/0x200000000,
|
||||
};
|
||||
static const int32_t out[] = { 0x00000000, 0x7fffff00, 0x80000000,
|
||||
0x40000000, 0xc0000000, 0x7fffff00, 0x80000000, 0x00000100,
|
||||
0xffffff00, 0x00000100, 0xffffff00, 0x00000000, 0x00000000,
|
||||
static const int32_t out[] = { 0x00000000, 0x7fffff80, 0x80000000,
|
||||
0x40000000, 0xc0000000, 0x7fffff80, 0x80000000, 0x00000100,
|
||||
0xffffff00, 0x00000100, 0xffffff00, 0x00000080, 0xffffff80,
|
||||
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
|
||||
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
|
||||
0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000,
|
||||
0x00000000, 0x00000000, 0x00000000,
|
||||
};
|
||||
|
||||
|
||||
run_test("test_f32_s32", in, sizeof(in[0]), out, sizeof(out[0]), SPA_N_ELEMENTS(out),
|
||||
true, true, conv_f32_to_s32_c);
|
||||
run_test("test_f32d_s32", in, sizeof(in[0]), out, sizeof(out[0]), SPA_N_ELEMENTS(out),
|
||||
|
|
@ -665,21 +664,16 @@ static void test_lossless_s25_32_to_s32_to_f32_to_s32_to_s25_32_XFAIL(void)
|
|||
spa_assert_se(max_abs_err == 1);
|
||||
}
|
||||
|
||||
static void test_lossless_s25_32_to_f32_to_s32_to_s25_32_XFAIL(void)
|
||||
static void test_lossless_s25_32_to_f32_to_s32_to_s25_32(void)
|
||||
{
|
||||
int32_t i;
|
||||
|
||||
int all_lossless = 1;
|
||||
int32_t max_abs_err = -1;
|
||||
fprintf(stderr, "test %s:\n", __func__);
|
||||
for (i = S25_MIN; i <= S25_MAX; i+=1) {
|
||||
float v = S25_32_TO_F32(i);
|
||||
int32_t t = S32_TO_S25_32(F32_TO_S32(v));
|
||||
all_lossless &= i == t;
|
||||
max_abs_err = SPA_MAX(max_abs_err, SPA_ABS(i - t));
|
||||
spa_assert_se(i == t);
|
||||
}
|
||||
spa_assert_se(!all_lossless);
|
||||
spa_assert_se(max_abs_err == 1);
|
||||
}
|
||||
|
||||
static void test_lossless_s32(void)
|
||||
|
|
@ -883,7 +877,7 @@ int main(int argc, char *argv[])
|
|||
test_lossless_s25_32_to_f32_to_s25_32();
|
||||
test_lossless_s25_32_to_s32_to_f32_to_s25_32_XFAIL();
|
||||
test_lossless_s25_32_to_s32_to_f32_to_s32_to_s25_32_XFAIL();
|
||||
test_lossless_s25_32_to_f32_to_s32_to_s25_32_XFAIL();
|
||||
test_lossless_s25_32_to_f32_to_s32_to_s25_32();
|
||||
test_lossless_s32();
|
||||
test_lossless_s32_lossless_subset();
|
||||
test_lossless_u32();
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue