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avcodec/siren: Factorize category 5 and 6 noise computation

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer 2020-12-24 22:13:56 +01:00
parent 1208872946
commit e847cabb60
1 changed files with 5 additions and 10 deletions
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15
libavcodec/siren.c
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@ -625,7 +625,7 @@ static int decode_vector(SirenContext *s, int number_of_regions,
coefs_ptr = coefs + (region * REGION_SIZE); coefs_ptr = coefs + (region * REGION_SIZE);
if (category == 5) { if (category == 5 || category == 6) {
i = 0; i = 0;
for (j = 0; j < REGION_SIZE; j++) { for (j = 0; j < REGION_SIZE; j++) {
if (*coefs_ptr != 0) if (*coefs_ptr != 0)
@ -633,15 +633,10 @@ static int decode_vector(SirenContext *s, int number_of_regions,
coefs_ptr++; coefs_ptr++;
} }
noise = decoder_standard_deviation[region] * noise_category5[i]; if (category == 5) {
} else if (category == 6) { noise = decoder_standard_deviation[region] * noise_category5[i];
i = 0; } else
for (j = 0; j < REGION_SIZE; j++) { noise = decoder_standard_deviation[region] * noise_category6[i];
if (*coefs_ptr++ != 0)
i++;
}
noise = decoder_standard_deviation[region] * noise_category6[i];
} else if (category == 7) { } else if (category == 7) {
noise = decoder_standard_deviation[region] * 0.70711f; noise = decoder_standard_deviation[region] * 0.70711f;
} else { } else {