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audioconvert: use av_popcount64 in av_get_channel_layout_nb_channels

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This commit is contained in:
Anton Khirnov 2012-06-09 20:14:12 +02:00
parent d7d071a673
commit 3596de55fc
1 changed files with 1 additions and 5 deletions
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6
libavutil/audioconvert.c
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@ -175,11 +175,7 @@ void av_get_channel_layout_string(char *buf, int buf_size,
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
{
int count;
uint64_t x = channel_layout;
for (count = 0; x; count++)
x &= x-1; // unset lowest set bit
return count;
return av_popcount64(channel_layout);
}
uint64_t av_get_default_channel_layout(int nb_channels)