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dsp: Optimize fractional multiplication in audio processing

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Removed duplicated multiplications

Change-Id: Iafe1030cd96f16664d6b136ebbe429313b6e6448
This commit is contained in:
Roman Artiukhin 2025-10-06 19:25:54 +03:00
parent cbfaa49d3f
commit 4e655be473
1 changed files with 9 additions and 6 deletions
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15
lib/rbcodec/dsp/pbe.c
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@ -159,24 +159,27 @@ static void pbe_process(struct dsp_proc_entry *this,
{
for (int i = 0; i < count; i++)
{
int32_t fracmul1 = FRACMUL(buf->p32[ch][i], tcoef1);
int32_t fracmul2 = FRACMUL(buf->p32[ch][i], tcoef2);
/* 160hz - 500hz no delay */
temp_buffer = FRACMUL(buf->p32[ch][i], tcoef1) -
FRACMUL(buf->p32[ch][i], tcoef2);
temp_buffer = fracmul1 -
fracmul2;
/* delay below 160hz*/
x = buf->p32[ch][i] -
FRACMUL(buf->p32[ch][i], tcoef1);
fracmul1;
temp_buffer += dequeue(b0[ch], &b0_r[ch], b0_level);
enqueue(x, b0[ch], &b0_w[ch], b0_level );
int32_t fracmul3 = FRACMUL(buf->p32[ch][i], tcoef3);
/* delay 500-1150hz */
x = FRACMUL(buf->p32[ch][i], tcoef2) -
FRACMUL(buf->p32[ch][i], tcoef3);
x = fracmul2 -
fracmul3;
temp_buffer += dequeue(b2[ch], &b2_r[ch], b2_level);
enqueue(x, b2[ch], &b2_w[ch], b2_level );
/* delay anything beyond 1150hz */
x = FRACMUL(buf->p32[ch][i], tcoef3);
x = fracmul3;
temp_buffer += dequeue(b3[ch], &b3_r[ch], B3_DLY);
enqueue(x, b3[ch], &b3_w[ch], B3_DLY );