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https://git.ffmpeg.org/ffmpeg.git
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Add hflip filter.
Originally committed as revision 24806 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini
parent
3123823cb2
commit
a1e171dfee
@ -30,6 +30,7 @@ version <next>:
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- RTP packetization of Theora and Vorbis
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- RTP depacketization of MP4A-LATM
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- RTP packetization and depacketization of VP8
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- hflip filter
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version 0.6:
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1
configure
vendored
1
configure
vendored
@ -1492,6 +1492,7 @@ mpg_test_deps="mpeg1system_muxer mpegps_demuxer"
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set_ne_test_deps pixdesc
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set_ne_test_deps pixfmts_crop
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set_ne_test_deps pixfmts_hflip
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set_ne_test_deps pixfmts_null
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set_ne_test_deps pixfmts_pad
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set_ne_test_deps pixfmts_scale
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@ -56,6 +56,16 @@ The following command:
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will convert the input video to the format ``yuv420p''.
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@section hflip
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Flip the input video horizontally.
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For example to horizontally flip the video in input with
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@file{ffmpeg}:
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@example
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ffmpeg -i in.avi -vf "hflip" out.avi
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@end example
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@section noformat
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Force libavfilter not to use any of the specified pixel formats for the
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@ -17,6 +17,7 @@ OBJS = allfilters.o \
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OBJS-$(CONFIG_ASPECT_FILTER) += vf_aspect.o
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OBJS-$(CONFIG_CROP_FILTER) += vf_crop.o
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OBJS-$(CONFIG_FORMAT_FILTER) += vf_format.o
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OBJS-$(CONFIG_HFLIP_FILTER) += vf_hflip.o
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OBJS-$(CONFIG_NOFORMAT_FILTER) += vf_format.o
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OBJS-$(CONFIG_NULL_FILTER) += vf_null.o
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OBJS-$(CONFIG_PAD_FILTER) += vf_pad.o
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@ -37,6 +37,7 @@ void avfilter_register_all(void)
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REGISTER_FILTER (ASPECT, aspect, vf);
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REGISTER_FILTER (CROP, crop, vf);
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REGISTER_FILTER (FORMAT, format, vf);
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REGISTER_FILTER (HFLIP, hflip, vf);
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REGISTER_FILTER (NOFORMAT, noformat, vf);
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REGISTER_FILTER (NULL, null, vf);
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REGISTER_FILTER (PAD, pad, vf);
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@ -25,8 +25,8 @@
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#include "libavutil/avutil.h"
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#define LIBAVFILTER_VERSION_MAJOR 1
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#define LIBAVFILTER_VERSION_MINOR 34
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#define LIBAVFILTER_VERSION_MICRO 1
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#define LIBAVFILTER_VERSION_MINOR 35
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#define LIBAVFILTER_VERSION_MICRO 0
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#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
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LIBAVFILTER_VERSION_MINOR, \
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167
libavfilter/vf_hflip.c
Normal file
167
libavfilter/vf_hflip.c
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@ -0,0 +1,167 @@
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/*
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* Copyright (c) 2007 Benoit Fouet
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* Copyright (c) 2010 Stefano Sabatini
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @flip
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* horizontal flip filter
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*/
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#include "avfilter.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/intreadwrite.h"
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typedef struct {
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int max_step[4]; ///< max pixel step for each plane, expressed as a number of bytes
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int hsub, vsub; ///< chroma subsampling
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} FlipContext;
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static int query_formats(AVFilterContext *ctx)
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{
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static const enum PixelFormat pix_fmts[] = {
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PIX_FMT_RGB48BE, PIX_FMT_RGB48LE,
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PIX_FMT_ARGB, PIX_FMT_RGBA,
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PIX_FMT_ABGR, PIX_FMT_BGRA,
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PIX_FMT_RGB24, PIX_FMT_BGR24,
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PIX_FMT_RGB565BE, PIX_FMT_RGB565LE,
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PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
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PIX_FMT_BGR565BE, PIX_FMT_BGR565LE,
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PIX_FMT_BGR555BE, PIX_FMT_BGR555LE,
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PIX_FMT_GRAY16BE, PIX_FMT_GRAY16LE,
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PIX_FMT_YUV420P16LE, PIX_FMT_YUV420P16BE,
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PIX_FMT_YUV422P16LE, PIX_FMT_YUV422P16BE,
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PIX_FMT_YUV444P16LE, PIX_FMT_YUV444P16BE,
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PIX_FMT_YUV444P, PIX_FMT_YUV422P,
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PIX_FMT_YUV420P, PIX_FMT_YUV411P,
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PIX_FMT_YUV410P, PIX_FMT_YUV440P,
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PIX_FMT_YUVJ444P, PIX_FMT_YUVJ422P,
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PIX_FMT_YUVJ420P, PIX_FMT_YUVJ440P,
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PIX_FMT_YUVA420P,
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PIX_FMT_RGB8, PIX_FMT_BGR8,
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PIX_FMT_RGB4_BYTE, PIX_FMT_BGR4_BYTE,
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PIX_FMT_PAL8, PIX_FMT_GRAY8,
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PIX_FMT_NONE
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};
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avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
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return 0;
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}
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static int config_props(AVFilterLink *inlink)
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{
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FlipContext *flip = inlink->dst->priv;
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const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format];
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int i;
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memset(flip->max_step, 0, sizeof(flip->max_step));
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for (i = 0; i < 4; i++) {
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const AVComponentDescriptor *comp = &(pix_desc->comp[i]);
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if ((comp->step_minus1+1) > flip->max_step[comp->plane])
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flip->max_step[comp->plane] = comp->step_minus1+1;
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}
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flip->hsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_w;
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flip->vsub = av_pix_fmt_descriptors[inlink->format].log2_chroma_h;
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return 0;
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}
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static void draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
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{
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FlipContext *flip = inlink->dst->priv;
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AVFilterBufferRef *inpic = inlink->cur_buf;
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AVFilterBufferRef *outpic = inlink->dst->outputs[0]->out_buf;
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uint8_t *inrow, *outrow;
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int i, j, plane, step, hsub, vsub;
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for (plane = 0; plane < 4 && inpic->data[plane]; plane++) {
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step = flip->max_step[plane];
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hsub = (plane == 1 || plane == 2) ? flip->hsub : 0;
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vsub = (plane == 1 || plane == 2) ? flip->vsub : 0;
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outrow = outpic->data[plane] + (y>>vsub) * outpic->linesize[plane];
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inrow = inpic ->data[plane] + (y>>vsub) * inpic ->linesize[plane] + ((inlink->w >> hsub) - 1) * step;
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for (i = 0; i < h>>vsub; i++) {
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switch (step) {
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case 1:
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{
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for (j = 0; j < (inlink->w >> hsub); j++)
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outrow[j] = inrow[-j];
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}
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break;
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case 2:
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{
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uint16_t *outrow16 = (uint16_t *)outrow;
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uint16_t * inrow16 = (uint16_t *) inrow;
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for (j = 0; j < (inlink->w >> hsub); j++)
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outrow16[j] = inrow16[-j];
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}
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break;
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case 3:
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{
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uint8_t *in = inrow;
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uint8_t *out = outrow;
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for (j = 0; j < (inlink->w >> hsub); j++, out += 3, in -= 3) {
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int32_t v = AV_RB24(in);
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AV_WB24(out, v);
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}
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}
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break;
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case 4:
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{
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uint32_t *outrow32 = (uint32_t *)outrow;
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uint32_t * inrow32 = (uint32_t *) inrow;
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for (j = 0; j < (inlink->w >> hsub); j++)
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outrow32[j] = inrow32[-j];
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}
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break;
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default:
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for (j = 0; j < (inlink->w >> hsub); j++)
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memcpy(outrow + j*step, inrow - j*step, step);
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}
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inrow += inpic ->linesize[plane];
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outrow += outpic->linesize[plane];
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}
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}
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avfilter_draw_slice(inlink->dst->outputs[0], y, h, slice_dir);
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}
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AVFilter avfilter_vf_hflip = {
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.name = "hflip",
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.description = NULL_IF_CONFIG_SMALL("Horizontally flip the input video."),
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.priv_size = sizeof(FlipContext),
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.query_formats = query_formats,
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.inputs = (AVFilterPad[]) {{ .name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.draw_slice = draw_slice,
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.config_props = config_props,
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.min_perms = AV_PERM_READ, },
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{ .name = NULL}},
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.outputs = (AVFilterPad[]) {{ .name = "default",
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.type = AVMEDIA_TYPE_VIDEO, },
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{ .name = NULL}},
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};
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@ -59,6 +59,7 @@ do_lavfi_pixfmts(){
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# all these filters have exactly one input and exactly one output
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do_lavfi_pixfmts "crop" "100:100:100:100"
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do_lavfi_pixfmts "hflip" ""
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do_lavfi_pixfmts "null" ""
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do_lavfi_pixfmts "pad" "500:400:20:20"
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do_lavfi_pixfmts "scale" "200:100"
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72
tests/ref/lavfi/pixfmts_hflip_le
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72
tests/ref/lavfi/pixfmts_hflip_le
Normal file
@ -0,0 +1,72 @@
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49468c6c9ceee5d52b08b1270a909323 *./tests/data/lavfi/pixfmts_hflip_le-abgr.nut
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20276703 ./tests/data/lavfi/pixfmts_hflip_le-abgr.nut
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50ba9f16c6475530602f2983278b82d0 *./tests/data/lavfi/pixfmts_hflip_le-argb.nut
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20276703 ./tests/data/lavfi/pixfmts_hflip_le-argb.nut
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cc53d2011d097972db0d22756c3699e3 *./tests/data/lavfi/pixfmts_hflip_le-bgr24.nut
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15207903 ./tests/data/lavfi/pixfmts_hflip_le-bgr24.nut
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aac987e7d1a6a96477cfc0b48a4285de *./tests/data/lavfi/pixfmts_hflip_le-bgr4_byte.nut
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5070254 ./tests/data/lavfi/pixfmts_hflip_le-bgr4_byte.nut
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ccee08679bac84a1f960c6c9070c5538 *./tests/data/lavfi/pixfmts_hflip_le-bgr555le.nut
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10139054 ./tests/data/lavfi/pixfmts_hflip_le-bgr555le.nut
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3703466e19e1b52e03a34fd244a8e8e4 *./tests/data/lavfi/pixfmts_hflip_le-bgr565le.nut
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10139054 ./tests/data/lavfi/pixfmts_hflip_le-bgr565le.nut
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50b505a889f0428242305acb642da107 *./tests/data/lavfi/pixfmts_hflip_le-bgr8.nut
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5070254 ./tests/data/lavfi/pixfmts_hflip_le-bgr8.nut
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01ca21e7e6a8d1281b4553bde8e8a404 *./tests/data/lavfi/pixfmts_hflip_le-bgra.nut
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20276703 ./tests/data/lavfi/pixfmts_hflip_le-bgra.nut
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03efcb4ab52a24c0af0e03cfd26c9377 *./tests/data/lavfi/pixfmts_hflip_le-gray.nut
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5070254 ./tests/data/lavfi/pixfmts_hflip_le-gray.nut
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9bcbca979601ddc4869f846f08f3d1dd *./tests/data/lavfi/pixfmts_hflip_le-gray16be.nut
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10139054 ./tests/data/lavfi/pixfmts_hflip_le-gray16be.nut
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c1b8965adcc7f847ee343149ff507073 *./tests/data/lavfi/pixfmts_hflip_le-gray16le.nut
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10139054 ./tests/data/lavfi/pixfmts_hflip_le-gray16le.nut
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754f1722fc738590cc407ac65749bfe8 *./tests/data/lavfi/pixfmts_hflip_le-rgb24.nut
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15207903 ./tests/data/lavfi/pixfmts_hflip_le-rgb24.nut
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10743e1577dc3198dbbc7c0b3b8f429e *./tests/data/lavfi/pixfmts_hflip_le-rgb48be.nut
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30414303 ./tests/data/lavfi/pixfmts_hflip_le-rgb48be.nut
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dd945a44f39119221407bf7a04f1bc49 *./tests/data/lavfi/pixfmts_hflip_le-rgb48le.nut
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30414303 ./tests/data/lavfi/pixfmts_hflip_le-rgb48le.nut
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c8a3f995fcf3e0919239ea2c413ddc29 *./tests/data/lavfi/pixfmts_hflip_le-rgb4_byte.nut
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5070254 ./tests/data/lavfi/pixfmts_hflip_le-rgb4_byte.nut
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8778ee0cf58ce9ad1d99a1eca9f95e87 *./tests/data/lavfi/pixfmts_hflip_le-rgb555le.nut
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10139054 ./tests/data/lavfi/pixfmts_hflip_le-rgb555le.nut
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2cb690eb3fcb72da3771ad6a48931158 *./tests/data/lavfi/pixfmts_hflip_le-rgb565le.nut
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10139054 ./tests/data/lavfi/pixfmts_hflip_le-rgb565le.nut
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9e462b811b9b6173397b9cfc1f6b2f17 *./tests/data/lavfi/pixfmts_hflip_le-rgb8.nut
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5070254 ./tests/data/lavfi/pixfmts_hflip_le-rgb8.nut
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d3d0dc1ecef3ed72f26a2986d0efc204 *./tests/data/lavfi/pixfmts_hflip_le-rgba.nut
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20276703 ./tests/data/lavfi/pixfmts_hflip_le-rgba.nut
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acb543ebbbf63eefe533e6faffc006da *./tests/data/lavfi/pixfmts_hflip_le-yuv410p.nut
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5703854 ./tests/data/lavfi/pixfmts_hflip_le-yuv410p.nut
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c626cf6d191139b4ca7efc0155f957f1 *./tests/data/lavfi/pixfmts_hflip_le-yuv411p.nut
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7604654 ./tests/data/lavfi/pixfmts_hflip_le-yuv411p.nut
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2d5c80f9ba2ddd85b2aeda3564cc7d64 *./tests/data/lavfi/pixfmts_hflip_le-yuv420p.nut
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7604654 ./tests/data/lavfi/pixfmts_hflip_le-yuv420p.nut
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758b0c1e2113b15e7afde48da4e4d024 *./tests/data/lavfi/pixfmts_hflip_le-yuv420p16be.nut
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15207903 ./tests/data/lavfi/pixfmts_hflip_le-yuv420p16be.nut
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480ccd951dcb806bc875d307e02e50a0 *./tests/data/lavfi/pixfmts_hflip_le-yuv420p16le.nut
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15207903 ./tests/data/lavfi/pixfmts_hflip_le-yuv420p16le.nut
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6e728f4eb9eae287c224f396d84be6ea *./tests/data/lavfi/pixfmts_hflip_le-yuv422p.nut
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10139054 ./tests/data/lavfi/pixfmts_hflip_le-yuv422p.nut
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a05d43cd62b790087bd37083174557de *./tests/data/lavfi/pixfmts_hflip_le-yuv422p16be.nut
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20276703 ./tests/data/lavfi/pixfmts_hflip_le-yuv422p16be.nut
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6954abebcbc62d81068d58d0c62bdd5b *./tests/data/lavfi/pixfmts_hflip_le-yuv422p16le.nut
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20276703 ./tests/data/lavfi/pixfmts_hflip_le-yuv422p16le.nut
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a99e2b57ed601f39852715c9d675d0d3 *./tests/data/lavfi/pixfmts_hflip_le-yuv440p.nut
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10139054 ./tests/data/lavfi/pixfmts_hflip_le-yuv440p.nut
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947e47f7bb5fdccc659d19b7df2b6fc3 *./tests/data/lavfi/pixfmts_hflip_le-yuv444p.nut
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15207903 ./tests/data/lavfi/pixfmts_hflip_le-yuv444p.nut
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e5ef45bc3d2f5b0b2542d5151340c382 *./tests/data/lavfi/pixfmts_hflip_le-yuv444p16be.nut
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30414303 ./tests/data/lavfi/pixfmts_hflip_le-yuv444p16be.nut
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70793e3d66d0c23a0cdedabe9c24c2a7 *./tests/data/lavfi/pixfmts_hflip_le-yuv444p16le.nut
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30414303 ./tests/data/lavfi/pixfmts_hflip_le-yuv444p16le.nut
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d83ec0c01498189f179ec574918185f1 *./tests/data/lavfi/pixfmts_hflip_le-yuva420p.nut
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12673454 ./tests/data/lavfi/pixfmts_hflip_le-yuva420p.nut
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df3aaaec3bb157c3bde5f0365af30f4f *./tests/data/lavfi/pixfmts_hflip_le-yuvj420p.nut
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7604654 ./tests/data/lavfi/pixfmts_hflip_le-yuvj420p.nut
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d113871528d510a192797af59df9c05c *./tests/data/lavfi/pixfmts_hflip_le-yuvj422p.nut
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10139054 ./tests/data/lavfi/pixfmts_hflip_le-yuvj422p.nut
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e8f7ed76e57c892a1e9e27a3f29452db *./tests/data/lavfi/pixfmts_hflip_le-yuvj440p.nut
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10139054 ./tests/data/lavfi/pixfmts_hflip_le-yuvj440p.nut
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2c3ae369607608c6dcb0d830f00f971a *./tests/data/lavfi/pixfmts_hflip_le-yuvj444p.nut
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15207903 ./tests/data/lavfi/pixfmts_hflip_le-yuvj444p.nut
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