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  1. /*
  2.  * This file is part of FFmpeg.
  3.  *
  4.  * FFmpeg is free software; you can redistribute it and/or
  5.  * modify it under the terms of the GNU Lesser General Public
  6.  * License as published by the Free Software Foundation; either
  7.  * version 2.1 of the License, or (at your option) any later version.
  8.  *
  9.  * FFmpeg is distributed in the hope that it will be useful,
  10.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12.  * Lesser General Public License for more details.
  13.  *
  14.  * You should have received a copy of the GNU Lesser General Public
  15.  * License along with FFmpeg; if not, write to the Free Software
  16.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17.  */
  18.  
  19. /**
  20.  * @file
  21.  * copy video filter
  22.  */
  23.  
  24. #include "libavutil/imgutils.h"
  25. #include "libavutil/internal.h"
  26. #include "avfilter.h"
  27. #include "internal.h"
  28. #include "video.h"
  29.  
  30. static int filter_frame(AVFilterLink *inlink, AVFrame *in)
  31. {
  32.     AVFilterLink *outlink = inlink->dst->outputs[0];
  33.     AVFrame *out = ff_get_video_buffer(outlink, in->width, in->height);
  34.  
  35.     if (!out) {
  36.         av_frame_free(&in);
  37.         return AVERROR(ENOMEM);
  38.     }
  39.     av_frame_copy_props(out, in);
  40.     av_image_copy(out->data, out->linesize, (const uint8_t**) in->data, in->linesize,
  41.                   in->format, in->width, in->height);
  42.  
  43.     av_frame_free(&in);
  44.     return ff_filter_frame(outlink, out);
  45. }
  46.  
  47. static const AVFilterPad avfilter_vf_copy_inputs[] = {
  48.     {
  49.         .name         = "default",
  50.         .type         = AVMEDIA_TYPE_VIDEO,
  51.         .filter_frame = filter_frame,
  52.     },
  53.     { NULL }
  54. };
  55.  
  56. static const AVFilterPad avfilter_vf_copy_outputs[] = {
  57.     {
  58.         .name = "default",
  59.         .type = AVMEDIA_TYPE_VIDEO,
  60.     },
  61.     { NULL }
  62. };
  63.  
  64. AVFilter avfilter_vf_copy = {
  65.     .name        = "copy",
  66.     .description = NULL_IF_CONFIG_SMALL("Copy the input video unchanged to the output."),
  67.     .inputs      = avfilter_vf_copy_inputs,
  68.     .outputs     = avfilter_vf_copy_outputs,
  69. };
  70.