virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-04-02 20:35:37 +02:00
Code Issues Releases Activity

audioconvert: use av_popcount64 in av_get_channel_layout_nb_channels

Browse Source
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
libavutil/audioconvert.c
View File

@ -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 av_get_channel_layout_nb_channels(uint64_t channel_layout)
{ {
int count; return av_popcount64(channel_layout);
uint64_t x = channel_layout;
for (count = 0; x; count++)
x &= x-1; // unset lowest set bit
return count;
} }
uint64_t av_get_default_channel_layout(int nb_channels) uint64_t av_get_default_channel_layout(int nb_channels)