[FFmpeg-devel] [PATCH] Implement av_samples_fill_linesizes().

[Michael Niedermayer]

On Sat, Jan 15, 2011 at 02:26:38AM +0100, Stefano Sabatini wrote:
> ---
>  libavcore/audioconvert.c |   20 ++++++++++++++++++++
>  libavcore/audioconvert.h |   18 +++++++++++++++++-
>  2 files changed, 37 insertions(+), 1 deletions(-)
> 
> diff --git a/libavcore/audioconvert.c b/libavcore/audioconvert.c
> index c720733..031c57f 100644
> --- a/libavcore/audioconvert.c
> +++ b/libavcore/audioconvert.c
> @@ -114,3 +114,23 @@ int av_get_channel_layout_nb_channels(int64_t channel_layout)
>          x &= x-1; // unset lowest set bit
>      return count;
>  }
> +
> +int av_samples_fill_linesizes(int linesizes[8], enum AVSampleFormat sample_fmt,
> +                              int planar, int64_t channel_layout, int nb_channels)
> +{
> +    int i, sample_size = av_get_bits_per_sample_fmt(sample_fmt) >>3;
> +
> +    if (nb_channels <= 0) {
> +        if (channel_layout > 0) {
> +            nb_channels = av_get_channel_layout_nb_channels(channel_layout);
> +        } else
> +            /* not enough information for computing the linesizes */
> +            return AVERROR(EINVAL);
> +    }
> +
> +    for (i = 0; i < nb_channels; i++)
> +        linesizes[i] = planar ? sample_size : nb_channels * sample_size;
> +    memset(&linesizes[nb_channels], 0, (8-nb_channels) * sizeof(linesizes[0]));
> +
> +    return 0;
> +}

channel_layout should not be a input parameter to this function, it has nothing
to do with channel layout

[...]
--
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Those who are best at talking, realize last or never when they are wrong.
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