| 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/avassert.h" |
| 22 | #include "libavutil/avstring.h" |
| 23 | #include "libavutil/imgutils.h" |
| 24 | #include "libavutil/opt.h" |
| 25 | #include "libavutil/pixdesc.h" |
| 26 | #include "avfilter.h" |
| 27 | #include "internal.h" |
| 28 | #include "framesync.h" |
| 29 | |
| 30 | typedef struct InputParam { |
| 31 | int depth[4]; |
| 32 | int nb_planes; |
| 33 | int planewidth[4]; |
| 34 | int planeheight[4]; |
| 35 | } InputParam; |
| 36 | |
| 37 | typedef struct MergePlanesContext { |
| 38 | const AVClass *class; |
| 39 | int64_t mapping; |
| 40 | const enum AVPixelFormat out_fmt; |
| 41 | int nb_inputs; |
| 42 | int nb_planes; |
| 43 | int planewidth[4]; |
| 44 | int planeheight[4]; |
| 45 | int map[4][2]; |
| 46 | const AVPixFmtDescriptor *outdesc; |
| 47 | |
| 48 | FFFrameSync fs; |
| 49 | FFFrameSyncIn fsin[3]; /* must be immediately after fs */ |
| 50 | } MergePlanesContext; |
| 51 | |
| 52 | #define OFFSET(x) offsetof(MergePlanesContext, x) |
| 53 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| 54 | static const AVOption mergeplanes_options[] = { |
| 55 | { "mapping", "set input to output plane mapping", OFFSET(mapping), AV_OPT_TYPE_INT, {.i64=0}, 0, 0x33333333, FLAGS }, |
| 56 | { "format", "set output pixel format", OFFSET(out_fmt), AV_OPT_TYPE_PIXEL_FMT, {.i64=AV_PIX_FMT_YUVA444P}, 0, INT_MAX, .flags=FLAGS }, |
| 57 | { NULL } |
| 58 | }; |
| 59 | |
| 60 | AVFILTER_DEFINE_CLASS(mergeplanes); |
| 61 | |
| 62 | static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
| 63 | { |
| 64 | MergePlanesContext *s = inlink->dst->priv; |
| 65 | return ff_framesync_filter_frame(&s->fs, inlink, in); |
| 66 | } |
| 67 | |
| 68 | static av_cold int init(AVFilterContext *ctx) |
| 69 | { |
| 70 | MergePlanesContext *s = ctx->priv; |
| 71 | int64_t m = s->mapping; |
| 72 | int i, ret; |
| 73 | |
| 74 | s->outdesc = av_pix_fmt_desc_get(s->out_fmt); |
| 75 | if (!(s->outdesc->flags & AV_PIX_FMT_FLAG_PLANAR) || |
| 76 | s->outdesc->nb_components < 2) { |
| 77 | av_log(ctx, AV_LOG_ERROR, "Only planar formats with more than one component are supported.\n"); |
| 78 | return AVERROR(EINVAL); |
| 79 | } |
| 80 | s->nb_planes = av_pix_fmt_count_planes(s->out_fmt); |
| 81 | |
| 82 | for (i = s->nb_planes - 1; i >= 0; i--) { |
| 83 | s->map[i][0] = m & 0xf; |
| 84 | m >>= 4; |
| 85 | s->map[i][1] = m & 0xf; |
| 86 | m >>= 4; |
| 87 | |
| 88 | if (s->map[i][0] > 3 || s->map[i][1] > 3) { |
| 89 | av_log(ctx, AV_LOG_ERROR, "Mapping with out of range input and/or plane number.\n"); |
| 90 | return AVERROR(EINVAL); |
| 91 | } |
| 92 | |
| 93 | s->nb_inputs = FFMAX(s->nb_inputs, s->map[i][1] + 1); |
| 94 | } |
| 95 | |
| 96 | av_assert0(s->nb_inputs && s->nb_inputs <= 4); |
| 97 | |
| 98 | for (i = 0; i < s->nb_inputs; i++) { |
| 99 | AVFilterPad pad = { 0 }; |
| 100 | |
| 101 | pad.type = AVMEDIA_TYPE_VIDEO; |
| 102 | pad.name = av_asprintf("in%d", i); |
| 103 | if (!pad.name) |
| 104 | return AVERROR(ENOMEM); |
| 105 | pad.filter_frame = filter_frame; |
| 106 | |
| 107 | if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0){ |
| 108 | av_freep(&pad.name); |
| 109 | return ret; |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | return 0; |
| 114 | } |
| 115 | |
| 116 | static int query_formats(AVFilterContext *ctx) |
| 117 | { |
| 118 | MergePlanesContext *s = ctx->priv; |
| 119 | AVFilterFormats *formats = NULL; |
| 120 | int i; |
| 121 | |
| 122 | s->outdesc = av_pix_fmt_desc_get(s->out_fmt); |
| 123 | for (i = 0; av_pix_fmt_desc_get(i); i++) { |
| 124 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i); |
| 125 | if (desc->comp[0].depth_minus1 == s->outdesc->comp[0].depth_minus1 && |
| 126 | av_pix_fmt_count_planes(i) == desc->nb_components) |
| 127 | ff_add_format(&formats, i); |
| 128 | } |
| 129 | |
| 130 | for (i = 0; i < s->nb_inputs; i++) |
| 131 | ff_formats_ref(formats, &ctx->inputs[i]->out_formats); |
| 132 | |
| 133 | formats = NULL; |
| 134 | ff_add_format(&formats, s->out_fmt); |
| 135 | ff_formats_ref(formats, &ctx->outputs[0]->in_formats); |
| 136 | |
| 137 | return 0; |
| 138 | } |
| 139 | |
| 140 | static int process_frame(FFFrameSync *fs) |
| 141 | { |
| 142 | AVFilterContext *ctx = fs->parent; |
| 143 | AVFilterLink *outlink = ctx->outputs[0]; |
| 144 | MergePlanesContext *s = fs->opaque; |
| 145 | AVFrame *in[4] = { NULL }; |
| 146 | AVFrame *out; |
| 147 | int i, ret; |
| 148 | |
| 149 | for (i = 0; i < s->nb_inputs; i++) { |
| 150 | if ((ret = ff_framesync_get_frame(&s->fs, i, &in[i], 0)) < 0) |
| 151 | return ret; |
| 152 | } |
| 153 | |
| 154 | out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| 155 | if (!out) |
| 156 | return AVERROR(ENOMEM); |
| 157 | out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base); |
| 158 | |
| 159 | for (i = 0; i < s->nb_planes; i++) { |
| 160 | const int input = s->map[i][1]; |
| 161 | const int plane = s->map[i][0]; |
| 162 | |
| 163 | av_image_copy_plane(out->data[i], out->linesize[i], |
| 164 | in[input]->data[plane], in[input]->linesize[plane], |
| 165 | s->planewidth[i], s->planeheight[i]); |
| 166 | } |
| 167 | |
| 168 | return ff_filter_frame(outlink, out); |
| 169 | } |
| 170 | |
| 171 | static int config_output(AVFilterLink *outlink) |
| 172 | { |
| 173 | AVFilterContext *ctx = outlink->src; |
| 174 | MergePlanesContext *s = ctx->priv; |
| 175 | InputParam inputsp[4]; |
| 176 | FFFrameSyncIn *in; |
| 177 | int i; |
| 178 | |
| 179 | ff_framesync_init(&s->fs, ctx, s->nb_inputs); |
| 180 | in = s->fs.in; |
| 181 | s->fs.opaque = s; |
| 182 | s->fs.on_event = process_frame; |
| 183 | |
| 184 | outlink->w = ctx->inputs[0]->w; |
| 185 | outlink->h = ctx->inputs[0]->h; |
| 186 | outlink->time_base = ctx->inputs[0]->time_base; |
| 187 | outlink->frame_rate = ctx->inputs[0]->frame_rate; |
| 188 | outlink->sample_aspect_ratio = ctx->inputs[0]->sample_aspect_ratio; |
| 189 | |
| 190 | s->planewidth[1] = |
| 191 | s->planewidth[2] = FF_CEIL_RSHIFT(outlink->w, s->outdesc->log2_chroma_w); |
| 192 | s->planewidth[0] = |
| 193 | s->planewidth[3] = outlink->w; |
| 194 | s->planeheight[1] = |
| 195 | s->planeheight[2] = FF_CEIL_RSHIFT(outlink->h, s->outdesc->log2_chroma_h); |
| 196 | s->planeheight[0] = |
| 197 | s->planeheight[3] = outlink->h; |
| 198 | |
| 199 | for (i = 0; i < s->nb_inputs; i++) { |
| 200 | InputParam *inputp = &inputsp[i]; |
| 201 | AVFilterLink *inlink = ctx->inputs[i]; |
| 202 | const AVPixFmtDescriptor *indesc = av_pix_fmt_desc_get(inlink->format); |
| 203 | int j; |
| 204 | |
| 205 | if (outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num || |
| 206 | outlink->sample_aspect_ratio.den != inlink->sample_aspect_ratio.den) { |
| 207 | av_log(ctx, AV_LOG_ERROR, "input #%d link %s SAR %d:%d " |
| 208 | "does not match output link %s SAR %d:%d\n", |
| 209 | i, ctx->input_pads[i].name, |
| 210 | inlink->sample_aspect_ratio.num, |
| 211 | inlink->sample_aspect_ratio.den, |
| 212 | ctx->output_pads[0].name, |
| 213 | outlink->sample_aspect_ratio.num, |
| 214 | outlink->sample_aspect_ratio.den); |
| 215 | return AVERROR(EINVAL); |
| 216 | } |
| 217 | |
| 218 | inputp->planewidth[1] = |
| 219 | inputp->planewidth[2] = FF_CEIL_RSHIFT(inlink->w, indesc->log2_chroma_w); |
| 220 | inputp->planewidth[0] = |
| 221 | inputp->planewidth[3] = inlink->w; |
| 222 | inputp->planeheight[1] = |
| 223 | inputp->planeheight[2] = FF_CEIL_RSHIFT(inlink->h, indesc->log2_chroma_h); |
| 224 | inputp->planeheight[0] = |
| 225 | inputp->planeheight[3] = inlink->h; |
| 226 | inputp->nb_planes = av_pix_fmt_count_planes(inlink->format); |
| 227 | |
| 228 | for (j = 0; j < inputp->nb_planes; j++) |
| 229 | inputp->depth[j] = indesc->comp[j].depth_minus1 + 1; |
| 230 | |
| 231 | in[i].time_base = inlink->time_base; |
| 232 | in[i].sync = 1; |
| 233 | in[i].before = EXT_STOP; |
| 234 | in[i].after = EXT_STOP; |
| 235 | } |
| 236 | |
| 237 | for (i = 0; i < s->nb_planes; i++) { |
| 238 | const int input = s->map[i][1]; |
| 239 | const int plane = s->map[i][0]; |
| 240 | InputParam *inputp = &inputsp[input]; |
| 241 | |
| 242 | if (plane + 1 > inputp->nb_planes) { |
| 243 | av_log(ctx, AV_LOG_ERROR, "input %d does not have %d plane\n", |
| 244 | input, plane); |
| 245 | goto fail; |
| 246 | } |
| 247 | if (s->outdesc->comp[i].depth_minus1 + 1 != inputp->depth[plane]) { |
| 248 | av_log(ctx, AV_LOG_ERROR, "output plane %d depth %d does not " |
| 249 | "match input %d plane %d depth %d\n", |
| 250 | i, s->outdesc->comp[i].depth_minus1 + 1, |
| 251 | input, plane, inputp->depth[plane]); |
| 252 | goto fail; |
| 253 | } |
| 254 | if (s->planewidth[i] != inputp->planewidth[plane]) { |
| 255 | av_log(ctx, AV_LOG_ERROR, "output plane %d width %d does not " |
| 256 | "match input %d plane %d width %d\n", |
| 257 | i, s->planewidth[i], |
| 258 | input, plane, inputp->planewidth[plane]); |
| 259 | goto fail; |
| 260 | } |
| 261 | if (s->planeheight[i] != inputp->planeheight[plane]) { |
| 262 | av_log(ctx, AV_LOG_ERROR, "output plane %d height %d does not " |
| 263 | "match input %d plane %d height %d\n", |
| 264 | i, s->planeheight[i], |
| 265 | input, plane, inputp->planeheight[plane]); |
| 266 | goto fail; |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | return ff_framesync_configure(&s->fs); |
| 271 | fail: |
| 272 | return AVERROR(EINVAL); |
| 273 | } |
| 274 | |
| 275 | static int request_frame(AVFilterLink *outlink) |
| 276 | { |
| 277 | MergePlanesContext *s = outlink->src->priv; |
| 278 | return ff_framesync_request_frame(&s->fs, outlink); |
| 279 | } |
| 280 | |
| 281 | static av_cold void uninit(AVFilterContext *ctx) |
| 282 | { |
| 283 | MergePlanesContext *s = ctx->priv; |
| 284 | int i; |
| 285 | |
| 286 | ff_framesync_uninit(&s->fs); |
| 287 | |
| 288 | for (i = 0; i < ctx->nb_inputs; i++) |
| 289 | av_freep(&ctx->input_pads[i].name); |
| 290 | } |
| 291 | |
| 292 | static const AVFilterPad mergeplanes_outputs[] = { |
| 293 | { |
| 294 | .name = "default", |
| 295 | .type = AVMEDIA_TYPE_VIDEO, |
| 296 | .config_props = config_output, |
| 297 | .request_frame = request_frame, |
| 298 | }, |
| 299 | { NULL } |
| 300 | }; |
| 301 | |
| 302 | AVFilter ff_vf_mergeplanes = { |
| 303 | .name = "mergeplanes", |
| 304 | .description = NULL_IF_CONFIG_SMALL("Merge planes."), |
| 305 | .priv_size = sizeof(MergePlanesContext), |
| 306 | .priv_class = &mergeplanes_class, |
| 307 | .init = init, |
| 308 | .uninit = uninit, |
| 309 | .query_formats = query_formats, |
| 310 | .inputs = NULL, |
| 311 | .outputs = mergeplanes_outputs, |
| 312 | .flags = AVFILTER_FLAG_DYNAMIC_INPUTS, |
| 313 | }; |