[FFmpeg-devel] [PATCH] lavfi: port MP swapuv filter

[Michael Niedermayer]

On Thu, Mar 08, 2012 at 04:33:09PM +0100, Stefano Sabatini wrote:
> ---
>  doc/filters.texi         |    3 +
>  libavfilter/Makefile     |    1 +
>  libavfilter/allfilters.c |    1 +
>  libavfilter/vf_swapuv.c  |   97 ++++++++++++++++++++++++++++++++++++++++++++++
>  4 files changed, 102 insertions(+), 0 deletions(-)
>  create mode 100644 libavfilter/vf_swapuv.c
> 
> diff --git a/doc/filters.texi b/doc/filters.texi
> index 2c646cb..b32de63 100644
> --- a/doc/filters.texi
> +++ b/doc/filters.texi
> @@ -2631,6 +2631,9 @@ For example:
>  will create two separate outputs from the same input, one cropped and
>  one padded.
>  
> + at section swapuv
> +Swap U & V plane.
> +
>  @section thumbnail
>  Select the most representative frame in a given sequence of consecutive frames.
>  
> diff --git a/libavfilter/Makefile b/libavfilter/Makefile
> index df3a27f..3bdb189 100644
> --- a/libavfilter/Makefile
> +++ b/libavfilter/Makefile
> @@ -87,6 +87,7 @@ OBJS-$(CONFIG_SETTB_FILTER)                  += vf_settb.o
>  OBJS-$(CONFIG_SHOWINFO_FILTER)               += vf_showinfo.o
>  OBJS-$(CONFIG_SLICIFY_FILTER)                += vf_slicify.o
>  OBJS-$(CONFIG_SPLIT_FILTER)                  += vf_split.o
> +OBJS-$(CONFIG_SWAPUV_FILTER)                 += vf_swapuv.o
>  OBJS-$(CONFIG_THUMBNAIL_FILTER)              += vf_thumbnail.o
>  OBJS-$(CONFIG_TINTERLACE_FILTER)             += vf_tinterlace.o
>  OBJS-$(CONFIG_TRANSPOSE_FILTER)              += vf_transpose.o
> diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
> index f6230be..f0a7f8b 100644
> --- a/libavfilter/allfilters.c
> +++ b/libavfilter/allfilters.c
> @@ -95,6 +95,7 @@ void avfilter_register_all(void)
>      REGISTER_FILTER (SHOWINFO,    showinfo,    vf);
>      REGISTER_FILTER (SLICIFY,     slicify,     vf);
>      REGISTER_FILTER (SPLIT,       split,       vf);
> +    REGISTER_FILTER (SWAPUV,      swapuv,      vf);
>      REGISTER_FILTER (THUMBNAIL,   thumbnail,   vf);
>      REGISTER_FILTER (TINTERLACE,  tinterlace,  vf);
>      REGISTER_FILTER (TRANSPOSE,   transpose,   vf);
> diff --git a/libavfilter/vf_swapuv.c b/libavfilter/vf_swapuv.c
> new file mode 100644
> index 0000000..cdd4702
> --- /dev/null
> +++ b/libavfilter/vf_swapuv.c
> @@ -0,0 +1,97 @@
> +/*
> + * Copyright (c) 2002 Michael Niedermayer <michaelni at gmx.at>
> + *
> + * This file is part of FFmpeg.
> + *
> + * FFmpeg is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + *
> + * FFmpeg is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> + * Lesser General Public License for more details.
> + *
> + * You should have received a copy of the GNU Lesser General Public
> + * License along with FFmpeg; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
> + */
> +
> +/**
> + * @file
> + * swap UV filter
> + */
> +
> +#include "avfilter.h"
> +
> +static AVFilterBufferRef *get_video_buffer(AVFilterLink *link, int perms,
> +                                           int w, int h)
> +{
> +    AVFilterBufferRef *picref =
> +        avfilter_default_get_video_buffer(link, perms, w, h);
> +    uint8_t *tmp;
> +    int tmp2;
> +
> +    picref->data[0] = picref->data[0];
> +    tmp = picref->data[2]; picref->data[2] = picref->data[1]; picref->data[1] = tmp;

> +    picref->data[3] = picref->data[3];
> +
> +    picref->linesize[0] = picref->linesize[0];

these 2 and a few others look unneeded


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

You can kill me, but you cannot change the truth.
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