| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2013 Paul B Mahol | ||
| 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 | #include "libavutil/imgutils.h" | ||
| 22 | #include "libavutil/opt.h" | ||
| 23 | #include "libavutil/pixdesc.h" | ||
| 24 | #include "avfilter.h" | ||
| 25 | #include "formats.h" | ||
| 26 | #include "internal.h" | ||
| 27 | #include "video.h" | ||
| 28 | |||
| 29 | typedef struct WeaveContext { | ||
| 30 | const AVClass *class; | ||
| 31 | int first_field; | ||
| 32 | int double_weave; | ||
| 33 | int nb_planes; | ||
| 34 | int planeheight[4]; | ||
| 35 | int outheight[4]; | ||
| 36 | int linesize[4]; | ||
| 37 | |||
| 38 | AVFrame *prev; | ||
| 39 | } WeaveContext; | ||
| 40 | |||
| 41 | #define OFFSET(x) offsetof(WeaveContext, x) | ||
| 42 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM | ||
| 43 | |||
| 44 | static const AVOption weave_options[] = { | ||
| 45 | { "first_field", "set first field", OFFSET(first_field), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, .unit = "field"}, | ||
| 46 | { "top", "set top field first", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, .unit = "field"}, | ||
| 47 | { "t", "set top field first", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, .unit = "field"}, | ||
| 48 | { "bottom", "set bottom field first", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, .unit = "field"}, | ||
| 49 | { "b", "set bottom field first", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, .unit = "field"}, | ||
| 50 | { NULL } | ||
| 51 | }; | ||
| 52 | |||
| 53 | AVFILTER_DEFINE_CLASS_EXT(weave, "(double)weave", weave_options); | ||
| 54 | |||
| 55 | 1 | static int query_formats(AVFilterContext *ctx) | |
| 56 | { | ||
| 57 | 1 | int reject_flags = AV_PIX_FMT_FLAG_PAL | AV_PIX_FMT_FLAG_HWACCEL; | |
| 58 | |||
| 59 | 1 | return ff_set_common_formats(ctx, ff_formats_pixdesc_filter(0, reject_flags)); | |
| 60 | } | ||
| 61 | |||
| 62 | 1 | static int config_props_output(AVFilterLink *outlink) | |
| 63 | { | ||
| 64 | 1 | AVFilterContext *ctx = outlink->src; | |
| 65 | 1 | WeaveContext *s = ctx->priv; | |
| 66 | 1 | AVFilterLink *inlink = ctx->inputs[0]; | |
| 67 | 1 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); | |
| 68 | int ret; | ||
| 69 | |||
| 70 |
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1 | if (!s->double_weave) { |
| 71 | 1 | outlink->time_base.num = inlink->time_base.num * 2; | |
| 72 | 1 | outlink->time_base.den = inlink->time_base.den; | |
| 73 | 1 | outlink->frame_rate.num = inlink->frame_rate.num; | |
| 74 | 1 | outlink->frame_rate.den = inlink->frame_rate.den * 2; | |
| 75 | } | ||
| 76 | 1 | outlink->w = inlink->w; | |
| 77 | 1 | outlink->h = inlink->h * 2; | |
| 78 | |||
| 79 |
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1 | if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0) |
| 80 | ✗ | return ret; | |
| 81 | |||
| 82 | 1 | s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h); | |
| 83 | 1 | s->planeheight[0] = s->planeheight[3] = inlink->h; | |
| 84 | |||
| 85 | 1 | s->outheight[1] = s->outheight[2] = AV_CEIL_RSHIFT(2*inlink->h, desc->log2_chroma_h); | |
| 86 | 1 | s->outheight[0] = s->outheight[3] = 2*inlink->h; | |
| 87 | |||
| 88 | 1 | s->nb_planes = av_pix_fmt_count_planes(inlink->format); | |
| 89 | |||
| 90 | 1 | return 0; | |
| 91 | } | ||
| 92 | |||
| 93 | typedef struct ThreadData { | ||
| 94 | AVFrame *in, *out; | ||
| 95 | } ThreadData; | ||
| 96 | |||
| 97 | 225 | static int weave_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) | |
| 98 | { | ||
| 99 | 225 | AVFilterLink *inlink = ctx->inputs[0]; | |
| 100 | 225 | WeaveContext *s = ctx->priv; | |
| 101 | 225 | ThreadData *td = arg; | |
| 102 | 225 | AVFrame *in = td->in; | |
| 103 | 225 | AVFrame *out = td->out; | |
| 104 | |||
| 105 |
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225 | const int weave = (s->double_weave && !(inlink->frame_count_out & 1)); |
| 106 |
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225 | const int field1 = weave ? s->first_field : (!s->first_field); |
| 107 |
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225 | const int field2 = weave ? (!s->first_field) : s->first_field; |
| 108 | |||
| 109 |
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900 | for (int i = 0; i < s->nb_planes; i++) { |
| 110 | 675 | const int height = s->planeheight[i]; | |
| 111 | 675 | const int start = (height * jobnr) / nb_jobs; | |
| 112 | 675 | const int end = (height * (jobnr+1)) / nb_jobs; | |
| 113 | 675 | const int compensation = 2*end > s->outheight[i]; | |
| 114 | |||
| 115 | 675 | av_image_copy_plane(out->data[i] + out->linesize[i] * field1 + | |
| 116 | 675 | out->linesize[i] * start * 2, | |
| 117 | 675 | out->linesize[i] * 2, | |
| 118 | 675 | in->data[i] + start * in->linesize[i], | |
| 119 | in->linesize[i], | ||
| 120 | 675 | s->linesize[i], end - start - compensation * field1); | |
| 121 | 675 | av_image_copy_plane(out->data[i] + out->linesize[i] * field2 + | |
| 122 | 675 | out->linesize[i] * start * 2, | |
| 123 | 675 | out->linesize[i] * 2, | |
| 124 | 675 | s->prev->data[i] + start * s->prev->linesize[i], | |
| 125 | 675 | s->prev->linesize[i], | |
| 126 | 675 | s->linesize[i], end - start - compensation * field2); | |
| 127 | } | ||
| 128 | |||
| 129 | 225 | return 0; | |
| 130 | } | ||
| 131 | |||
| 132 | 50 | static int filter_frame(AVFilterLink *inlink, AVFrame *in) | |
| 133 | { | ||
| 134 | 50 | AVFilterContext *ctx = inlink->dst; | |
| 135 | 50 | WeaveContext *s = ctx->priv; | |
| 136 | 50 | AVFilterLink *outlink = ctx->outputs[0]; | |
| 137 | ThreadData td; | ||
| 138 | AVFrame *out; | ||
| 139 | |||
| 140 |
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50 | if (!s->prev) { |
| 141 | 25 | s->prev = in; | |
| 142 | 25 | return 0; | |
| 143 | } | ||
| 144 | |||
| 145 | 25 | out = ff_get_video_buffer(outlink, outlink->w, outlink->h); | |
| 146 |
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25 | if (!out) { |
| 147 | ✗ | av_frame_free(&in); | |
| 148 | ✗ | av_frame_free(&s->prev); | |
| 149 | ✗ | return AVERROR(ENOMEM); | |
| 150 | } | ||
| 151 | 25 | av_frame_copy_props(out, in); | |
| 152 | |||
| 153 | 25 | td.out = out, td.in = in; | |
| 154 | 25 | ff_filter_execute(ctx, weave_slice, &td, NULL, | |
| 155 |
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25 | FFMIN(s->planeheight[1], ff_filter_get_nb_threads(ctx))); |
| 156 | |||
| 157 |
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25 | out->pts = s->double_weave ? s->prev->pts : in->pts / 2; |
| 158 | #if FF_API_INTERLACED_FRAME | ||
| 159 | FF_DISABLE_DEPRECATION_WARNINGS | ||
| 160 | 25 | out->interlaced_frame = 1; | |
| 161 | 25 | out->top_field_first = !s->first_field; | |
| 162 | FF_ENABLE_DEPRECATION_WARNINGS | ||
| 163 | #endif | ||
| 164 | 25 | out->flags |= AV_FRAME_FLAG_INTERLACED; | |
| 165 |
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25 | if (s->first_field) |
| 166 | 25 | out->flags &= ~AV_FRAME_FLAG_TOP_FIELD_FIRST; | |
| 167 | else | ||
| 168 | ✗ | out->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST; | |
| 169 | |||
| 170 |
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25 | if (!s->double_weave) |
| 171 | 25 | av_frame_free(&in); | |
| 172 | 25 | av_frame_free(&s->prev); | |
| 173 |
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25 | if (s->double_weave) |
| 174 | ✗ | s->prev = in; | |
| 175 | 25 | return ff_filter_frame(outlink, out); | |
| 176 | } | ||
| 177 | |||
| 178 | 2 | static av_cold void uninit(AVFilterContext *ctx) | |
| 179 | { | ||
| 180 | 2 | WeaveContext *s = ctx->priv; | |
| 181 | |||
| 182 | 2 | av_frame_free(&s->prev); | |
| 183 | 2 | } | |
| 184 | |||
| 185 | static const AVFilterPad weave_inputs[] = { | ||
| 186 | { | ||
| 187 | .name = "default", | ||
| 188 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 189 | .filter_frame = filter_frame, | ||
| 190 | }, | ||
| 191 | }; | ||
| 192 | |||
| 193 | static const AVFilterPad weave_outputs[] = { | ||
| 194 | { | ||
| 195 | .name = "default", | ||
| 196 | .type = AVMEDIA_TYPE_VIDEO, | ||
| 197 | .config_props = config_props_output, | ||
| 198 | }, | ||
| 199 | }; | ||
| 200 | |||
| 201 | const AVFilter ff_vf_weave = { | ||
| 202 | .name = "weave", | ||
| 203 | .description = NULL_IF_CONFIG_SMALL("Weave input video fields into frames."), | ||
| 204 | .priv_size = sizeof(WeaveContext), | ||
| 205 | .priv_class = &weave_class, | ||
| 206 | .uninit = uninit, | ||
| 207 | FILTER_INPUTS(weave_inputs), | ||
| 208 | FILTER_OUTPUTS(weave_outputs), | ||
| 209 | FILTER_QUERY_FUNC(query_formats), | ||
| 210 | .flags = AVFILTER_FLAG_SLICE_THREADS, | ||
| 211 | }; | ||
| 212 | |||
| 213 | ✗ | static av_cold int init(AVFilterContext *ctx) | |
| 214 | { | ||
| 215 | ✗ | WeaveContext *s = ctx->priv; | |
| 216 | |||
| 217 | ✗ | if (!strcmp(ctx->filter->name, "doubleweave")) | |
| 218 | ✗ | s->double_weave = 1; | |
| 219 | |||
| 220 | ✗ | return 0; | |
| 221 | } | ||
| 222 | |||
| 223 | const AVFilter ff_vf_doubleweave = { | ||
| 224 | .name = "doubleweave", | ||
| 225 | .description = NULL_IF_CONFIG_SMALL("Weave input video fields into double number of frames."), | ||
| 226 | .priv_class = &weave_class, | ||
| 227 | .priv_size = sizeof(WeaveContext), | ||
| 228 | .init = init, | ||
| 229 | .uninit = uninit, | ||
| 230 | FILTER_INPUTS(weave_inputs), | ||
| 231 | FILTER_OUTPUTS(weave_outputs), | ||
| 232 | FILTER_QUERY_FUNC(query_formats), | ||
| 233 | .flags = AVFILTER_FLAG_SLICE_THREADS, | ||
| 234 | }; | ||
| 235 |