blob: b0159cff00e1142af1a1c8436682bc9fd370e2c3
| 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 query_formats(AVFilterContext *ctx) |
| 31 | { |
| 32 | AVFilterFormats *formats = NULL; |
| 33 | int fmt; |
| 34 | |
| 35 | for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) { |
| 36 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt); |
| 37 | int ret; |
| 38 | if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) |
| 39 | continue; |
| 40 | if ((ret = ff_add_format(&formats, fmt)) < 0) |
| 41 | return ret; |
| 42 | } |
| 43 | |
| 44 | return ff_set_common_formats(ctx, formats); |
| 45 | } |
| 46 | |
| 47 | static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
| 48 | { |
| 49 | AVFilterLink *outlink = inlink->dst->outputs[0]; |
| 50 | AVFrame *out = ff_get_video_buffer(outlink, in->width, in->height); |
| 51 | |
| 52 | if (!out) { |
| 53 | av_frame_free(&in); |
| 54 | return AVERROR(ENOMEM); |
| 55 | } |
| 56 | av_frame_copy_props(out, in); |
| 57 | av_frame_copy(out, in); |
| 58 | av_frame_free(&in); |
| 59 | return ff_filter_frame(outlink, out); |
| 60 | } |
| 61 | |
| 62 | static const AVFilterPad avfilter_vf_copy_inputs[] = { |
| 63 | { |
| 64 | .name = "default", |
| 65 | .type = AVMEDIA_TYPE_VIDEO, |
| 66 | .filter_frame = filter_frame, |
| 67 | }, |
| 68 | { NULL } |
| 69 | }; |
| 70 | |
| 71 | static const AVFilterPad avfilter_vf_copy_outputs[] = { |
| 72 | { |
| 73 | .name = "default", |
| 74 | .type = AVMEDIA_TYPE_VIDEO, |
| 75 | }, |
| 76 | { NULL } |
| 77 | }; |
| 78 | |
| 79 | AVFilter ff_vf_copy = { |
| 80 | .name = "copy", |
| 81 | .description = NULL_IF_CONFIG_SMALL("Copy the input video unchanged to the output."), |
| 82 | .inputs = avfilter_vf_copy_inputs, |
| 83 | .outputs = avfilter_vf_copy_outputs, |
| 84 | .query_formats = query_formats, |
| 85 | }; |
| 86 |