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FFmpeg/libavfilter/vf_vflip.c
Michael Niedermayer a05a44e205 Merge commit '7e350379f87e7f74420b4813170fe808e2313911'
* commit '7e350379f87e7f74420b4813170fe808e2313911':
  lavfi: switch to AVFrame.

Conflicts:
	doc/filters.texi
	libavfilter/af_ashowinfo.c
	libavfilter/audio.c
	libavfilter/avfilter.c
	libavfilter/avfilter.h
	libavfilter/buffersink.c
	libavfilter/buffersrc.c
	libavfilter/buffersrc.h
	libavfilter/f_select.c
	libavfilter/f_setpts.c
	libavfilter/fifo.c
	libavfilter/split.c
	libavfilter/src_movie.c
	libavfilter/version.h
	libavfilter/vf_aspect.c
	libavfilter/vf_bbox.c
	libavfilter/vf_blackframe.c
	libavfilter/vf_delogo.c
	libavfilter/vf_drawbox.c
	libavfilter/vf_drawtext.c
	libavfilter/vf_fade.c
	libavfilter/vf_fieldorder.c
	libavfilter/vf_fps.c
	libavfilter/vf_frei0r.c
	libavfilter/vf_gradfun.c
	libavfilter/vf_hqdn3d.c
	libavfilter/vf_lut.c
	libavfilter/vf_overlay.c
	libavfilter/vf_pad.c
	libavfilter/vf_scale.c
	libavfilter/vf_showinfo.c
	libavfilter/vf_transpose.c
	libavfilter/vf_vflip.c
	libavfilter/vf_yadif.c
	libavfilter/video.c
	libavfilter/vsrc_testsrc.c
	libavfilter/yadif.h

Following are notes about the merge authorship and various technical details.

Michael Niedermayer:
  * Main merge operation, notably avfilter.c and video.c
  * Switch to AVFrame:
    - afade
    - anullsrc
    - apad
    - aresample
    - blackframe
    - deshake
    - idet
    - il
    - mandelbrot
    - mptestsrc
    - noise
    - setfield
    - smartblur
    - tinterlace
  * various merge changes and fixes in:
    - ashowinfo
    - blackdetect
    - field
    - fps
    - select
    - testsrc
    - yadif

Nicolas George:
  * Switch to AVFrame:
    - make rawdec work with refcounted frames. Adapted from commit
      759001c534 by Anton Khirnov.
      Also, fix the use of || instead of | in a flags check.
    - make buffer sink and src, audio and video work all together

Clément Bœsch:
  * Switch to AVFrame:
    - aevalsrc
    - alphaextract
    - blend
    - cellauto
    - colormatrix
    - concat
    - earwax
    - ebur128
    - edgedetect
    - geq
    - histeq
    - histogram
    - hue
    - kerndeint
    - life
    - movie
    - mp (with the help of Michael)
    - overlay
    - pad
    - pan
    - pp
    - pp
    - removelogo
    - sendcmd
    - showspectrum
    - showwaves
    - silencedetect
    - stereo3d
    - subtitles
    - super2xsai
    - swapuv
    - thumbnail
    - tile

Hendrik Leppkes:
  * Switch to AVFrame:
    - aconvert
    - amerge
    - asetnsamples
    - atempo
    - biquads

Matthieu Bouron:
  * Switch to AVFrame
    - alphamerge
    - decimate
    - volumedetect

Stefano Sabatini:
  * Switch to AVFrame:
    - astreamsync
    - flite
    - framestep

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Nicolas George <nicolas.george@normalesup.org>
Signed-off-by: Clément Bœsch <ubitux@gmail.com>
Signed-off-by: Hendrik Leppkes <h.leppkes@gmail.com>
Signed-off-by: Matthieu Bouron <matthieu.bouron@gmail.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-03-10 01:40:35 +01:00

112 lines
2.9 KiB
C

/*
* Copyright (c) 2007 Bobby Bingham
*
* 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
* video vertical flip filter
*/
#include "libavutil/internal.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"
#include "video.h"
typedef struct {
int vsub; ///< vertical chroma subsampling
} FlipContext;
static int config_input(AVFilterLink *link)
{
FlipContext *flip = link->dst->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(link->format);
flip->vsub = desc->log2_chroma_h;
return 0;
}
static AVFrame *get_video_buffer(AVFilterLink *link, int w, int h)
{
FlipContext *flip = link->dst->priv;
AVFrame *frame;
int i;
frame = ff_get_video_buffer(link->dst->outputs[0], w, h);
if (!frame)
return NULL;
for (i = 0; i < 4; i ++) {
int vsub = i == 1 || i == 2 ? flip->vsub : 0;
if (frame->data[i]) {
frame->data[i] += (((h + (1<<vsub) - 1) >> vsub) - 1) * frame->linesize[i];
frame->linesize[i] = -frame->linesize[i];
}
}
return frame;
}
static int filter_frame(AVFilterLink *link, AVFrame *frame)
{
FlipContext *flip = link->dst->priv;
int i;
for (i = 0; i < 4; i ++) {
int vsub = i == 1 || i == 2 ? flip->vsub : 0;
if (frame->data[i]) {
frame->data[i] += (((link->h + (1<<vsub)-1)>> vsub)-1) * frame->linesize[i];
frame->linesize[i] = -frame->linesize[i];
}
}
return ff_filter_frame(link->dst->outputs[0], frame);
}
static const AVFilterPad avfilter_vf_vflip_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.get_video_buffer = get_video_buffer,
.filter_frame = filter_frame,
.config_props = config_input,
},
{ NULL }
};
static const AVFilterPad avfilter_vf_vflip_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
{ NULL }
};
AVFilter avfilter_vf_vflip = {
.name = "vflip",
.description = NULL_IF_CONFIG_SMALL("Flip the input video vertically."),
.priv_size = sizeof(FlipContext),
.inputs = avfilter_vf_vflip_inputs,
.outputs = avfilter_vf_vflip_outputs,
};