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audioconvert: round instead of truncate, to reduce distortion

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See #2543
This commit is contained in:
Wim Taymans 2022-07-13 20:56:13 +02:00
parent d18428f8bb
commit 0ba3e7c5db
4 changed files with 58 additions and 58 deletions
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50
spa/plugins/audioconvert/fmt-ops-avx2.c
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@ -559,7 +559,7 @@ conv_f32d_to_s32_1s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
for(n = 0; n < unrolled; n += 4) {
in[0] = _mm_mul_ps(_mm_load_ps(&s0[n]), scale);
in[0] = _MM_CLAMP_PS(in[0], int_min, int_max);
out[0] = _mm_cvttps_epi32(in[0]);
out[0] = _mm_cvtps_epi32(in[0]);
out[0] = _mm_slli_epi32(out[0], 8);
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));
@ -606,8 +606,8 @@ conv_f32d_to_s32_2s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
in[0] = _MM256_CLAMP_PS(in[0], int_min, int_max);
in[1] = _MM256_CLAMP_PS(in[1], int_min, int_max);
out[0] = _mm256_cvttps_epi32(in[0]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
out[1] = _mm256_cvttps_epi32(in[1]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
out[0] = _mm256_cvtps_epi32(in[0]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
out[1] = _mm256_cvtps_epi32(in[1]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
out[0] = _mm256_slli_epi32(out[0], 8);
out[1] = _mm256_slli_epi32(out[1], 8);
@ -649,7 +649,7 @@ conv_f32d_to_s32_2s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
in[0] = _mm_mul_ps(in[0], scale);
in[0] = _MM_CLAMP_PS(in[0], int_min, int_max);
out[0] = _mm_cvttps_epi32(in[0]);
out[0] = _mm_cvtps_epi32(in[0]);
out[0] = _mm_slli_epi32(out[0], 8);
_mm_storel_epi64((__m128i*)d, out[0]);
d += n_channels;
@ -688,10 +688,10 @@ conv_f32d_to_s32_4s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
in[2] = _MM256_CLAMP_PS(in[2], int_min, int_max);
in[3] = _MM256_CLAMP_PS(in[3], int_min, int_max);
out[0] = _mm256_cvttps_epi32(in[0]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
out[1] = _mm256_cvttps_epi32(in[1]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
out[2] = _mm256_cvttps_epi32(in[2]); /* c0 c1 c2 c3 c4 c5 c6 c7 */
out[3] = _mm256_cvttps_epi32(in[3]); /* d0 d1 d2 d3 d4 d5 d6 d7 */
out[0] = _mm256_cvtps_epi32(in[0]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
out[1] = _mm256_cvtps_epi32(in[1]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
out[2] = _mm256_cvtps_epi32(in[2]); /* c0 c1 c2 c3 c4 c5 c6 c7 */
out[3] = _mm256_cvtps_epi32(in[3]); /* d0 d1 d2 d3 d4 d5 d6 d7 */
out[0] = _mm256_slli_epi32(out[0], 8);
out[1] = _mm256_slli_epi32(out[1], 8);
out[2] = _mm256_slli_epi32(out[2], 8);
@ -735,7 +735,7 @@ conv_f32d_to_s32_4s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
in[0] = _mm_mul_ps(in[0], scale);
in[0] = _MM_CLAMP_PS(in[0], int_min, int_max);
out[0] = _mm_cvttps_epi32(in[0]);
out[0] = _mm_cvtps_epi32(in[0]);
out[0] = _mm_slli_epi32(out[0], 8);
_mm_storeu_si128((__m128i*)d, out[0]);
d += n_channels;
@ -778,8 +778,8 @@ conv_f32d_to_s16_1s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
for(n = 0; n < unrolled; n += 8) {
in[0] = _mm_mul_ps(_mm_load_ps(&s0[n]), int_scale);
in[1] = _mm_mul_ps(_mm_load_ps(&s0[n+4]), int_scale);
out[0] = _mm_cvttps_epi32(in[0]);
out[1] = _mm_cvttps_epi32(in[1]);
out[0] = _mm_cvtps_epi32(in[0]);
out[1] = _mm_cvtps_epi32(in[1]);
out[0] = _mm_packs_epi32(out[0], out[1]);
d[0*n_channels] = _mm_extract_epi16(out[0], 0);
@ -821,8 +821,8 @@ conv_f32d_to_s16_2s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
in[0] = _mm256_mul_ps(_mm256_load_ps(&s0[n+0]), int_scale);
in[1] = _mm256_mul_ps(_mm256_load_ps(&s1[n+0]), int_scale);
out[0] = _mm256_cvttps_epi32(in[0]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
out[1] = _mm256_cvttps_epi32(in[1]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
out[0] = _mm256_cvtps_epi32(in[0]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
out[1] = _mm256_cvtps_epi32(in[1]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
t[0] = _mm256_unpacklo_epi32(out[0], out[1]); /* a0 b0 a1 b1 a4 b4 a5 b5 */
t[1] = _mm256_unpackhi_epi32(out[0], out[1]); /* a2 b2 a3 b3 a6 b6 a7 b7 */
@ -881,10 +881,10 @@ conv_f32d_to_s16_4s_avx2(void *data, void * SPA_RESTRICT dst, const void * SPA_R
in[2] = _mm256_mul_ps(_mm256_load_ps(&s2[n]), int_scale);
in[3] = _mm256_mul_ps(_mm256_load_ps(&s3[n]), int_scale);
t[0] = _mm256_cvttps_epi32(in[0]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
t[1] = _mm256_cvttps_epi32(in[1]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
t[2] = _mm256_cvttps_epi32(in[2]); /* c0 c1 c2 c3 c4 c5 c6 c7 */
t[3] = _mm256_cvttps_epi32(in[3]); /* d0 d1 d2 d3 d4 d5 d6 d7 */
t[0] = _mm256_cvtps_epi32(in[0]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
t[1] = _mm256_cvtps_epi32(in[1]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
t[2] = _mm256_cvtps_epi32(in[2]); /* c0 c1 c2 c3 c4 c5 c6 c7 */
t[3] = _mm256_cvtps_epi32(in[3]); /* d0 d1 d2 d3 d4 d5 d6 d7 */
t[0] = _mm256_packs_epi32(t[0], t[2]); /* a0 a1 a2 a3 c0 c1 c2 c3 a4 a5 a6 a7 c4 c5 c6 c7 */
t[1] = _mm256_packs_epi32(t[1], t[3]); /* b0 b1 b2 b3 d0 d1 d2 d3 b4 b5 b6 b7 d4 d5 d6 d7 */
@ -979,10 +979,10 @@ conv_f32d_to_s16_4_avx2(struct convert *conv, void * SPA_RESTRICT dst[], const v
in[2] = _mm256_mul_ps(_mm256_load_ps(&s2[n]), int_scale);
in[3] = _mm256_mul_ps(_mm256_load_ps(&s3[n]), int_scale);
t[0] = _mm256_cvttps_epi32(in[0]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
t[1] = _mm256_cvttps_epi32(in[1]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
t[2] = _mm256_cvttps_epi32(in[2]); /* c0 c1 c2 c3 c4 c5 c6 c7 */
t[3] = _mm256_cvttps_epi32(in[3]); /* d0 d1 d2 d3 d4 d5 d6 d7 */
t[0] = _mm256_cvtps_epi32(in[0]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
t[1] = _mm256_cvtps_epi32(in[1]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
t[2] = _mm256_cvtps_epi32(in[2]); /* c0 c1 c2 c3 c4 c5 c6 c7 */
t[3] = _mm256_cvtps_epi32(in[3]); /* d0 d1 d2 d3 d4 d5 d6 d7 */
t[0] = _mm256_packs_epi32(t[0], t[2]); /* a0 a1 a2 a3 c0 c1 c2 c3 a4 a5 a6 a7 c4 c5 c6 c7 */
t[1] = _mm256_packs_epi32(t[1], t[3]); /* b0 b1 b2 b3 d0 d1 d2 d3 b4 b5 b6 b7 d4 d5 d6 d7 */
@ -1044,10 +1044,10 @@ conv_f32d_to_s16_2_avx2(struct convert *conv, void * SPA_RESTRICT dst[], const v
in[2] = _mm256_mul_ps(_mm256_load_ps(&s0[n+8]), int_scale);
in[3] = _mm256_mul_ps(_mm256_load_ps(&s1[n+8]), int_scale);
out[0] = _mm256_cvttps_epi32(in[0]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
out[1] = _mm256_cvttps_epi32(in[1]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
out[2] = _mm256_cvttps_epi32(in[2]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
out[3] = _mm256_cvttps_epi32(in[3]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
out[0] = _mm256_cvtps_epi32(in[0]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
out[1] = _mm256_cvtps_epi32(in[1]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
out[2] = _mm256_cvtps_epi32(in[2]); /* a0 a1 a2 a3 a4 a5 a6 a7 */
out[3] = _mm256_cvtps_epi32(in[3]); /* b0 b1 b2 b3 b4 b5 b6 b7 */
t[0] = _mm256_unpacklo_epi32(out[0], out[1]); /* a0 b0 a1 b1 a4 b4 a5 b5 */
t[1] = _mm256_unpackhi_epi32(out[0], out[1]); /* a2 b2 a3 b3 a6 b6 a7 b7 */