On Fri, 27 Jan 2017 18:42:03 +0700
Muhammad Faiz <mfc...@gmail.com> wrote:
> affect filters that set partial_buf_size
> test-case
> ffplay -i lavfi 'aevalsrc=sin(1000*t*t), aformat=sample_fmts=fltp, asplit
> [a][b];
> [a] firequalizer=fixed=on, showcqt=s=1280x360 [a1];
> [b] firequalizer=fixed=on, showcqt=s=1280x360 [b1];
> [a1][b1] vstack'
>
> Signed-off-by: Muhammad Faiz <mfc...@gmail.com>
> ---
> libavfilter/avfilter.c | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
> index c12d491..7e7e83c 100644
> --- a/libavfilter/avfilter.c
> +++ b/libavfilter/avfilter.c
> @@ -1235,6 +1235,23 @@ static int take_samples(AVFilterLink *link, unsigned
> min, unsigned max,
> frame = ff_framequeue_peek(&link->fifo, 0);
> av_samples_copy(buf->extended_data, frame->extended_data, p, 0, n,
> link->channels, link->format);
> +
> + if (!av_frame_is_writable(frame)) {
> + AVFrame *new = ff_get_audio_buffer(link, frame->nb_samples);
> + if (!new)
> + return AVERROR(ENOMEM);
> + ret = av_frame_copy_props(new, frame);
> + if (ret < 0)
> + return ret;
> + av_samples_copy(new->extended_data, frame->extended_data,
> + 0, 0, frame->nb_samples,
> + av_frame_get_channels(frame),
> + frame->format);
> + av_frame_unref(frame);
> + av_frame_move_ref(frame, new);
> + av_frame_free(&new);
> + }
> +
> frame->nb_samples -= n;
> av_samples_copy(frame->extended_data, frame->extended_data, 0, n,
> frame->nb_samples, link->channels, link->format);
There's a function that does this automatically:
av_frame_make_writable()
Might not be fully equivalent though due to ff_get_audio_buffer()
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