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| | 1 | /* |
| | 2 | * Copyright (c) 2022 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/pixdesc.h" |
| | 23 | #include "libavutil/opt.h" |
| | 24 | #include "avfilter.h" |
| | 25 | #include "formats.h" |
| | 26 | #include "internal.h" |
| | 27 | #include "video.h" |
| | 28 | #include "framesync.h" |
| | 29 | |
| | 30 | typedef struct MultiplyContext { |
| | 31 | const AVClass *class; |
| | 32 | |
| | 33 | float offset; |
| | 34 | float scale; |
| | 35 | int planes; |
| | 36 | |
| | 37 | int linesize[4]; |
| | 38 | int nb_planes; |
| | 39 | |
| | 40 | FFFrameSync fs; |
| | 41 | } MultiplyContext; |
| | 42 | |
| | 43 | #define OFFSET(x) offsetof(MultiplyContext, x) |
| | 44 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM |
| | 45 | |
| | 46 | typedef struct ThreadData { |
| | 47 | AVFrame *src, *ref, *dst; |
| | 48 | } ThreadData; |
| | 49 | |
| | 50 | static const AVOption multiply_options[] = { |
| | 51 | { "scale", "set scale", OFFSET(scale), AV_OPT_TYPE_FLOAT, {.dbl=1}, 0., 9., FLAGS }, |
| | 52 | { "offset", "set offset", OFFSET(offset), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, -1., 1., FLAGS }, |
| | 53 | { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=0xF}, 0., 0xF, FLAGS }, |
| | 54 | { NULL } |
| | 55 | }; |
| | 56 | |
| | 57 | static const enum AVPixelFormat pix_fmts[] = { |
| | 58 | AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32, |
| | 59 | AV_PIX_FMT_NONE |
| | 60 | }; |
| | 61 | |
| | 62 | static int config_input(AVFilterLink *inlink) |
| | 63 | { |
| | 64 | AVFilterContext *ctx = inlink->dst; |
| | 65 | MultiplyContext *s = ctx->priv; |
| | 66 | int ret; |
| | 67 | |
| | 68 | s->nb_planes = av_pix_fmt_count_planes(inlink->format); |
| | 69 | if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0) |
| | 70 | return ret; |
| | 71 | |
| | 72 | return 0; |
| | 73 | } |
| | 74 | |
| | 75 | static void multiply(const uint8_t *ssrc, const uint8_t *rref, uint8_t *ddst, |
| | 76 | float scale, float offset, int w) |
| | 77 | { |
| | 78 | const float *src = (const float *)ssrc; |
| | 79 | const float *ref = (const float *)rref; |
| | 80 | float *dst = (float *)ddst; |
| | 81 | |
| | 82 | for (int x = 0; x < w; x++) { |
| | 83 | const float factor = (ref[x] + offset) * scale; |
| | 84 | |
| | 85 | dst[x] = src[x] * factor; |
| | 86 | } |
| | 87 | } |
| | 88 | |
| | 89 | static int multiply_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
| | 90 | { |
| | 91 | MultiplyContext *s = ctx->priv; |
| | 92 | const float offset = s->offset; |
| | 93 | const float scale = s->scale; |
| | 94 | ThreadData *td = arg; |
| | 95 | |
| | 96 | for (int p = 0; p < s->nb_planes; p++) { |
| | 97 | const ptrdiff_t src_linesize = td->src->linesize[p]; |
| | 98 | const ptrdiff_t ref_linesize = td->ref->linesize[p]; |
| | 99 | const ptrdiff_t dst_linesize = td->dst->linesize[p]; |
| | 100 | const int w = td->src->width; |
| | 101 | const int h = td->src->height; |
| | 102 | const int slice_start = (h * jobnr) / nb_jobs; |
| | 103 | const int slice_end = (h * (jobnr+1)) / nb_jobs; |
| | 104 | const uint8_t *src = td->src->data[p] + slice_start * src_linesize; |
| | 105 | const uint8_t *ref = td->ref->data[p] + slice_start * ref_linesize; |
| | 106 | uint8_t *dst = td->dst->data[p] + slice_start * dst_linesize; |
| | 107 | |
| | 108 | if (!((1 << p) & s->planes)) { |
| | 109 | av_image_copy_plane(dst, dst_linesize, ref, ref_linesize, |
| | 110 | s->linesize[p], slice_end - slice_start); |
| | 111 | continue; |
| | 112 | } |
| | 113 | |
| | 114 | for (int y = slice_start; y < slice_end; y++) { |
| | 115 | multiply(src, ref, dst, scale, offset, w); |
| | 116 | |
| | 117 | dst += dst_linesize; |
| | 118 | src += src_linesize; |
| | 119 | ref += ref_linesize; |
| | 120 | } |
| | 121 | } |
| | 122 | |
| | 123 | return 0; |
| | 124 | } |
| | 125 | |
| | 126 | static int process_frame(FFFrameSync *fs) |
| | 127 | { |
| | 128 | AVFilterContext *ctx = fs->parent; |
| | 129 | MultiplyContext *s = fs->opaque; |
| | 130 | AVFilterLink *outlink = ctx->outputs[0]; |
| | 131 | AVFrame *out, *src, *ref; |
| | 132 | int ret; |
| | 133 | |
| | 134 | if ((ret = ff_framesync_get_frame(&s->fs, 0, &src, 0)) < 0 || |
| | 135 | (ret = ff_framesync_get_frame(&s->fs, 1, &ref, 0)) < 0) |
| | 136 | return ret; |
| | 137 | |
| | 138 | if (ctx->is_disabled) { |
| | 139 | out = av_frame_clone(src); |
| | 140 | if (!out) |
| | 141 | return AVERROR(ENOMEM); |
| | 142 | } else { |
| | 143 | ThreadData td; |
| | 144 | |
| | 145 | out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| | 146 | if (!out) |
| | 147 | return AVERROR(ENOMEM); |
| | 148 | av_frame_copy_props(out, src); |
| | 149 | |
| | 150 | td.src = src; |
| | 151 | td.ref = ref; |
| | 152 | td.dst = out; |
| | 153 | |
| | 154 | ff_filter_execute(ctx, multiply_slice, &td, NULL, |
| | 155 | FFMIN(outlink->h, ff_filter_get_nb_threads(ctx))); |
| | 156 | } |
| | 157 | out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base); |
| | 158 | |
| | 159 | return ff_filter_frame(outlink, out); |
| | 160 | } |
| | 161 | |
| | 162 | static int config_output(AVFilterLink *outlink) |
| | 163 | { |
| | 164 | AVFilterContext *ctx = outlink->src; |
| | 165 | MultiplyContext *s = ctx->priv; |
| | 166 | AVFilterLink *source = ctx->inputs[0]; |
| | 167 | AVFilterLink *ref = ctx->inputs[1]; |
| | 168 | FFFrameSyncIn *in; |
| | 169 | int ret; |
| | 170 | |
| | 171 | if (source->w != ref->w || source->h != ref->h) { |
| | 172 | av_log(ctx, AV_LOG_ERROR, "First input link %s parameters " |
| | 173 | "(size %dx%d) do not match the corresponding " |
| | 174 | "second input link %s parameters (%dx%d)\n", |
| | 175 | ctx->input_pads[0].name, source->w, source->h, |
| | 176 | ctx->input_pads[1].name, ref->w, ref->h); |
| | 177 | return AVERROR(EINVAL); |
| | 178 | } |
| | 179 | |
| | 180 | outlink->w = source->w; |
| | 181 | outlink->h = source->h; |
| | 182 | outlink->sample_aspect_ratio = source->sample_aspect_ratio; |
| | 183 | outlink->frame_rate = source->frame_rate; |
| | 184 | |
| | 185 | if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0) |
| | 186 | return ret; |
| | 187 | |
| | 188 | in = s->fs.in; |
| | 189 | in[0].time_base = source->time_base; |
| | 190 | in[1].time_base = ref->time_base; |
| | 191 | in[0].sync = 1; |
| | 192 | in[0].before = EXT_STOP; |
| | 193 | in[0].after = EXT_INFINITY; |
| | 194 | in[1].sync = 1; |
| | 195 | in[1].before = EXT_STOP; |
| | 196 | in[1].after = EXT_INFINITY; |
| | 197 | s->fs.opaque = s; |
| | 198 | s->fs.on_event = process_frame; |
| | 199 | |
| | 200 | ret = ff_framesync_configure(&s->fs); |
| | 201 | outlink->time_base = s->fs.time_base; |
| | 202 | |
| | 203 | return ret; |
| | 204 | } |
| | 205 | |
| | 206 | static int activate(AVFilterContext *ctx) |
| | 207 | { |
| | 208 | MultiplyContext *s = ctx->priv; |
| | 209 | return ff_framesync_activate(&s->fs); |
| | 210 | } |
| | 211 | |
| | 212 | static av_cold void uninit(AVFilterContext *ctx) |
| | 213 | { |
| | 214 | MultiplyContext *s = ctx->priv; |
| | 215 | |
| | 216 | ff_framesync_uninit(&s->fs); |
| | 217 | } |
| | 218 | |
| | 219 | static const AVFilterPad multiply_inputs[] = { |
| | 220 | { |
| | 221 | .name = "source", |
| | 222 | .type = AVMEDIA_TYPE_VIDEO, |
| | 223 | .config_props = config_input, |
| | 224 | }, |
| | 225 | { |
| | 226 | .name = "factor", |
| | 227 | .type = AVMEDIA_TYPE_VIDEO, |
| | 228 | }, |
| | 229 | }; |
| | 230 | |
| | 231 | static const AVFilterPad multiply_outputs[] = { |
| | 232 | { |
| | 233 | .name = "default", |
| | 234 | .type = AVMEDIA_TYPE_VIDEO, |
| | 235 | .config_props = config_output, |
| | 236 | }, |
| | 237 | }; |
| | 238 | |
| | 239 | AVFILTER_DEFINE_CLASS(multiply); |
| | 240 | |
| | 241 | const AVFilter ff_vf_multiply = { |
| | 242 | .name = "multiply", |
| | 243 | .description = NULL_IF_CONFIG_SMALL("Multiply first video stream with second video stream."), |
| | 244 | .priv_class = &multiply_class, |
| | 245 | .priv_size = sizeof(MultiplyContext), |
| | 246 | .uninit = uninit, |
| | 247 | .activate = activate, |
| | 248 | FILTER_INPUTS(multiply_inputs), |
| | 249 | FILTER_OUTPUTS(multiply_outputs), |
| | 250 | FILTER_PIXFMTS_ARRAY(pix_fmts), |
| | 251 | .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS, |
| | 252 | .process_command = ff_filter_process_command, |
| | 253 | }; |