diff options
Diffstat (limited to 'libavcodec/ac3enc_float.c')
| -rw-r--r-- | libavcodec/ac3enc_float.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libavcodec/ac3enc_float.c b/libavcodec/ac3enc_float.c index 32ec558e70..598c69db1b 100644 --- a/libavcodec/ac3enc_float.c +++ b/libavcodec/ac3enc_float.c @@ -120,6 +120,18 @@ static void clip_coefficients(DSPContext *dsp, float *coef, unsigned int len) } +/** + * Calculate a single coupling coordinate. + */ +static CoefType calc_cpl_coord(CoefSumType energy_ch, CoefSumType energy_cpl) +{ + float coord = 0.125; + if (energy_cpl > 0) + coord *= sqrtf(energy_ch / energy_cpl); + return FFMIN(coord, COEF_MAX); +} + + #if CONFIG_AC3_ENCODER AVCodec ff_ac3_encoder = { .name = "ac3", |