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| author | Marton Balint <cus@passwd.hu> | 2016-12-26 01:19:34 +0100 |
|---|---|---|
| committer | Marton Balint <cus@passwd.hu> | 2017-01-24 23:51:36 +0100 |
| commit | c4618f842a2de85097627763f02931afc3fde6d9 (patch) | |
| tree | 3ce0700ff1dfa7f52726aa984558c04cc3e5209f /libavutil/channel_layout.h | |
| parent | 5049f05f27c20f0606209bf3508e1157e0eabc9e (diff) | |
| download | ffmpeg-c4618f842a2de85097627763f02931afc3fde6d9.tar.gz | |
avutil/channel_layout: add av_get_extended_channel_layout
Return a channel layout and the number of channels based on the specified name.
This function is similar to av_get_channel_layout(), but can also parse unknown
channel layout specifications.
Unknown channel layout specifications are a decimal number and a capital 'C'
suffix, in order to not break compatibility with the lowercase 'c' suffix,
which is used for a guessed channel layout with the specified number of
channels.
Signed-off-by: Marton Balint <cus@passwd.hu>
Diffstat (limited to 'libavutil/channel_layout.h')
| -rw-r--r-- | libavutil/channel_layout.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/libavutil/channel_layout.h b/libavutil/channel_layout.h index 38c3337829..50bb8f03c5 100644 --- a/libavutil/channel_layout.h +++ b/libavutil/channel_layout.h @@ -142,6 +142,20 @@ enum AVMatrixEncoding { uint64_t av_get_channel_layout(const char *name); /** + * Return a channel layout and the number of channels based on the specified name. + * + * This function is similar to (@see av_get_channel_layout), but can also parse + * unknown channel layout specifications. + * + * @param[in] name channel layout specification string + * @param[out] channel_layout parsed channel layout (0 if unknown) + * @param[out] nb_channels number of channels + * + * @return 0 on success, AVERROR(EINVAL) if the parsing fails. + */ +int av_get_extended_channel_layout(const char *name, uint64_t* channel_layout, int* nb_channels); + +/** * Return a description of a channel layout. * If nb_channels is <= 0, it is guessed from the channel_layout. * |