| 0,0 → 1,94 |
|---|
| /* |
| * Copyright (c) 2012 Stefano Sabatini |
| * |
| * 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 |
| * set field order |
| */ |
| |
| #include "libavutil/opt.h" |
| #include "avfilter.h" |
| #include "internal.h" |
| #include "video.h" |
| |
| enum SetFieldMode { |
| MODE_AUTO = -1, |
| MODE_BFF, |
| MODE_TFF, |
| MODE_PROG, |
| }; |
| |
| typedef struct { |
| const AVClass *class; |
| enum SetFieldMode mode; |
| } SetFieldContext; |
| |
| #define OFFSET(x) offsetof(SetFieldContext, x) |
| #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| |
| static const AVOption setfield_options[] = { |
| {"mode", "select interlace mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_AUTO}, -1, MODE_PROG, FLAGS, "mode"}, |
| {"auto", "keep the same input field", 0, AV_OPT_TYPE_CONST, {.i64=MODE_AUTO}, INT_MIN, INT_MAX, FLAGS, "mode"}, |
| {"bff", "mark as bottom-field-first", 0, AV_OPT_TYPE_CONST, {.i64=MODE_BFF}, INT_MIN, INT_MAX, FLAGS, "mode"}, |
| {"tff", "mark as top-field-first", 0, AV_OPT_TYPE_CONST, {.i64=MODE_TFF}, INT_MIN, INT_MAX, FLAGS, "mode"}, |
| {"prog", "mark as progressive", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PROG}, INT_MIN, INT_MAX, FLAGS, "mode"}, |
| {NULL} |
| }; |
| |
| AVFILTER_DEFINE_CLASS(setfield); |
| |
| static int filter_frame(AVFilterLink *inlink, AVFrame *picref) |
| { |
| SetFieldContext *setfield = inlink->dst->priv; |
| |
| if (setfield->mode == MODE_PROG) { |
| picref->interlaced_frame = 0; |
| } else if (setfield->mode != MODE_AUTO) { |
| picref->interlaced_frame = 1; |
| picref->top_field_first = setfield->mode; |
| } |
| return ff_filter_frame(inlink->dst->outputs[0], picref); |
| } |
| |
| static const AVFilterPad setfield_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .filter_frame = filter_frame, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad setfield_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter avfilter_vf_setfield = { |
| .name = "setfield", |
| .description = NULL_IF_CONFIG_SMALL("Force field for the output video frame."), |
| .priv_size = sizeof(SetFieldContext), |
| .priv_class = &setfield_class, |
| .inputs = setfield_inputs, |
| .outputs = setfield_outputs, |
| }; |