repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (c) 2012 Stefano Sabatini | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 6 | * FFmpeg is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU Lesser General Public | |
| 8 | * License as published by the Free Software Foundation; either | |
| 9 | * version 2.1 of the License, or (at your option) any later version. | |
| 10 | * | |
| 11 | * FFmpeg is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | * Lesser General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU Lesser General Public | |
| 17 | * License along with FFmpeg; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | ||
| 21 | /** | |
| 22 | * @file | |
| 23 | * set field order | |
| 24 | */ | |
| 25 | ||
| 26 | #include "libavutil/opt.h" | |
| 27 | #include "avfilter.h" | |
| 28 | #include "internal.h" | |
| 29 | #include "video.h" | |
| 30 | ||
| 31 | enum SetFieldMode { | |
| 32 | MODE_AUTO = -1, | |
| 33 | MODE_BFF, | |
| 34 | MODE_TFF, | |
| 35 | MODE_PROG, | |
| 36 | }; | |
| 37 | ||
| 38 | typedef struct { | |
| 39 | const AVClass *class; | |
| 40 | enum SetFieldMode mode; | |
| 41 | } SetFieldContext; | |
| 42 | ||
| 43 | #define OFFSET(x) offsetof(SetFieldContext, x) | |
| 44 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM | |
| 45 | ||
| 46 | static const AVOption setfield_options[] = { | |
| 47 | {"mode", "select interlace mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_AUTO}, -1, MODE_PROG, FLAGS, "mode"}, | |
| 48 | {"auto", "keep the same input field", 0, AV_OPT_TYPE_CONST, {.i64=MODE_AUTO}, INT_MIN, INT_MAX, FLAGS, "mode"}, | |
| 49 | {"bff", "mark as bottom-field-first", 0, AV_OPT_TYPE_CONST, {.i64=MODE_BFF}, INT_MIN, INT_MAX, FLAGS, "mode"}, | |
| 50 | {"tff", "mark as top-field-first", 0, AV_OPT_TYPE_CONST, {.i64=MODE_TFF}, INT_MIN, INT_MAX, FLAGS, "mode"}, | |
| 51 | {"prog", "mark as progressive", 0, AV_OPT_TYPE_CONST, {.i64=MODE_PROG}, INT_MIN, INT_MAX, FLAGS, "mode"}, | |
| 52 | {NULL} | |
| 53 | }; | |
| 54 | ||
| 55 | AVFILTER_DEFINE_CLASS(setfield); | |
| 56 | ||
| 57 | static int filter_frame(AVFilterLink *inlink, AVFrame *picref) | |
| 58 | { | |
| 59 | SetFieldContext *setfield = inlink->dst->priv; | |
| 60 | ||
| 61 | if (setfield->mode == MODE_PROG) { | |
| 62 | picref->interlaced_frame = 0; | |
| 63 | } else if (setfield->mode != MODE_AUTO) { | |
| 64 | picref->interlaced_frame = 1; | |
| 65 | picref->top_field_first = setfield->mode; | |
| 66 | } | |
| 67 | return ff_filter_frame(inlink->dst->outputs[0], picref); | |
| 68 | } | |
| 69 | ||
| 70 | static const AVFilterPad setfield_inputs[] = { | |
| 71 | { | |
| 72 | .name = "default", | |
| 73 | .type = AVMEDIA_TYPE_VIDEO, | |
| 74 | .filter_frame = filter_frame, | |
| 75 | }, | |
| 76 | { NULL } | |
| 77 | }; | |
| 78 | ||
| 79 | static const AVFilterPad setfield_outputs[] = { | |
| 80 | { | |
| 81 | .name = "default", | |
| 82 | .type = AVMEDIA_TYPE_VIDEO, | |
| 83 | }, | |
| 84 | { NULL } | |
| 85 | }; | |
| 86 | ||
| 87 | AVFilter ff_vf_setfield = { | |
| 88 | .name = "setfield", | |
| 89 | .description = NULL_IF_CONFIG_SMALL("Force field for the output video frame."), | |
| 90 | .priv_size = sizeof(SetFieldContext), | |
| 91 | .priv_class = &setfield_class, | |
| 92 | .inputs = setfield_inputs, | |
| 93 | .outputs = setfield_outputs, | |
| 94 | }; |