diff options
Diffstat (limited to 'libavcodec/aac.c')
| -rw-r--r-- | libavcodec/aac.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/libavcodec/aac.c b/libavcodec/aac.c index 0e2db1267d..d18e25b1df 100644 --- a/libavcodec/aac.c +++ b/libavcodec/aac.c @@ -754,12 +754,19 @@ static int decode_spectrum_and_dequant(AACContext * ac, float coef[1024], GetBit } if (pulse_present) { + idx = 0; for(i = 0; i < pulse->num_pulse; i++){ float co = coef_base[ pulse->pos[i] ]; + while(offsets[idx + 1] <= pulse->pos[i]) + idx++; + if (band_type[idx] != NOISE_BT && sf[idx]) { float ico = -pulse->amp[i]; - if (co) + if (co) { + co /= sf[idx]; ico = co / sqrtf(sqrtf(fabsf(co))) + (co > 0 ? -ico : ico); - coef_base[ pulse->pos[i] ] = cbrtf(fabsf(ico)) * ico; + } + coef_base[ pulse->pos[i] ] = cbrtf(fabsf(ico)) * ico * sf[idx]; + } } } return 0; |