diff options
Diffstat (limited to 'libavfilter/f_ebur128.c')
| -rw-r--r-- | libavfilter/f_ebur128.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/libavfilter/f_ebur128.c b/libavfilter/f_ebur128.c index a02cf28..c18ae79 100644 --- a/libavfilter/f_ebur128.c +++ b/libavfilter/f_ebur128.c @@ -363,7 +363,6 @@ static int config_audio_input(AVFilterLink *inlink) static int config_audio_output(AVFilterLink *outlink) { int i; - int idx_bitposn = 0; AVFilterContext *ctx = outlink->src; EBUR128Context *ebur128 = ctx->priv; const int nb_channels = av_get_channel_layout_nb_channels(outlink->channel_layout); @@ -379,23 +378,16 @@ static int config_audio_output(AVFilterLink *outlink) return AVERROR(ENOMEM); for (i = 0; i < nb_channels; i++) { - - /* find the next bit that is set starting from the right */ - while ((outlink->channel_layout & 1ULL<<idx_bitposn) == 0 && idx_bitposn < 63) - idx_bitposn++; - /* channel weighting */ - if ((1ULL<<idx_bitposn & AV_CH_LOW_FREQUENCY) || - (1ULL<<idx_bitposn & AV_CH_LOW_FREQUENCY_2)) { + const uint16_t chl = av_channel_layout_extract_channel(outlink->channel_layout, i); + if (chl & (AV_CH_LOW_FREQUENCY|AV_CH_LOW_FREQUENCY_2)) { ebur128->ch_weighting[i] = 0; - } else if (1ULL<<idx_bitposn & BACK_MASK) { + } else if (chl & BACK_MASK) { ebur128->ch_weighting[i] = 1.41; } else { ebur128->ch_weighting[i] = 1.0; } - idx_bitposn++; - if (!ebur128->ch_weighting[i]) continue; |
