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ipc4: mixin: Fix HiFi3 impl of 24-bit mixing #9792

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merged 1 commit into from
Jan 27, 2025
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ipc4: mixin: Fix HiFi3 impl of 24-bit mixing #9792

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9 changes: 9 additions & 0 deletions src/audio/mixin_mixout/mixin_mixout_hifi3.c
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Original file line number Diff line number Diff line change
Expand Up @@ -255,6 +255,9 @@ static void mix_s24(struct cir_buf_ptr *sink, int32_t start_sample, int32_t mixe
AE_LA32X2_IP(in_sample, inu, in);
AE_LA32X2_IP(out_sample, outu1, out);
out--;
/* sign extent in_sample as AE_ADD24S expects Q9.23 arguments */
in_sample = AE_SLAI24S(AE_MOVF24X2_FROMINT32X2(in_sample), 0);
/* out_sample is already sign extended by other mixin in a loop below */
out_sample = AE_ADD24S(in_sample, out_sample);
AE_SA32X2_IP(out_sample, outu2, out);
}
Expand All @@ -264,6 +267,8 @@ static void mix_s24(struct cir_buf_ptr *sink, int32_t start_sample, int32_t mixe
if (left) {
AE_L32_IP(in_sample, (ae_int32 *)in, sizeof(ae_int32));
AE_L32_IP(out_sample, (ae_int32 *)out, 0);
/* sign extension */
in_sample = AE_SLAI24S(AE_MOVF24X2_FROMINT32X2(in_sample), 0);
out_sample = AE_ADD24S(in_sample, out_sample);
AE_S32_L_IP(out_sample, (ae_int32 *)out, sizeof(ae_int32));
}
Expand All @@ -283,12 +288,16 @@ static void mix_s24(struct cir_buf_ptr *sink, int32_t start_sample, int32_t mixe
left = n & 1;
for (i = 0; i < m; i++) {
AE_LA32X2_IP(in_sample, inu, in);
/* sign extension */
in_sample = AE_SLAI24S(AE_MOVF24X2_FROMINT32X2(in_sample), 0);
AE_SA32X2_IP(in_sample, outu2, out);
}
AE_SA64POS_FP(outu2, out);
/* process the left sample to avoid memory access overrun */
if (left) {
AE_L32_IP(in_sample, (ae_int32 *)in, sizeof(ae_int32));
/* sign extension */
in_sample = AE_SLAI24S(AE_MOVF24X2_FROMINT32X2(in_sample), 0);
AE_S32_L_IP(in_sample, (ae_int32 *)out, sizeof(ae_int32));
}
}
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