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path: root/libavfilter/vf_mergeplanes.c (plain)
blob: c21104320d1365f42fa229602330737e9abcd02d
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
30typedef struct InputParam {
31 int depth[4];
32 int nb_planes;
33 int planewidth[4];
34 int planeheight[4];
35} InputParam;
36
37typedef 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} MergePlanesContext;
50
51#define OFFSET(x) offsetof(MergePlanesContext, x)
52#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
53static const AVOption mergeplanes_options[] = {
54 { "mapping", "set input to output plane mapping", OFFSET(mapping), AV_OPT_TYPE_INT, {.i64=0}, 0, 0x33333333, FLAGS },
55 { "format", "set output pixel format", OFFSET(out_fmt), AV_OPT_TYPE_PIXEL_FMT, {.i64=AV_PIX_FMT_YUVA444P}, 0, INT_MAX, .flags=FLAGS },
56 { NULL }
57};
58
59AVFILTER_DEFINE_CLASS(mergeplanes);
60
61static int filter_frame(AVFilterLink *inlink, AVFrame *in)
62{
63 MergePlanesContext *s = inlink->dst->priv;
64 return ff_framesync_filter_frame(&s->fs, inlink, in);
65}
66
67static av_cold int init(AVFilterContext *ctx)
68{
69 MergePlanesContext *s = ctx->priv;
70 int64_t m = s->mapping;
71 int i, ret;
72
73 s->outdesc = av_pix_fmt_desc_get(s->out_fmt);
74 if (!(s->outdesc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
75 s->outdesc->nb_components < 2) {
76 av_log(ctx, AV_LOG_ERROR, "Only planar formats with more than one component are supported.\n");
77 return AVERROR(EINVAL);
78 }
79 s->nb_planes = av_pix_fmt_count_planes(s->out_fmt);
80
81 for (i = s->nb_planes - 1; i >= 0; i--) {
82 s->map[i][0] = m & 0xf;
83 m >>= 4;
84 s->map[i][1] = m & 0xf;
85 m >>= 4;
86
87 if (s->map[i][0] > 3 || s->map[i][1] > 3) {
88 av_log(ctx, AV_LOG_ERROR, "Mapping with out of range input and/or plane number.\n");
89 return AVERROR(EINVAL);
90 }
91
92 s->nb_inputs = FFMAX(s->nb_inputs, s->map[i][1] + 1);
93 }
94
95 av_assert0(s->nb_inputs && s->nb_inputs <= 4);
96
97 for (i = 0; i < s->nb_inputs; i++) {
98 AVFilterPad pad = { 0 };
99
100 pad.type = AVMEDIA_TYPE_VIDEO;
101 pad.name = av_asprintf("in%d", i);
102 if (!pad.name)
103 return AVERROR(ENOMEM);
104 pad.filter_frame = filter_frame;
105
106 if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0){
107 av_freep(&pad.name);
108 return ret;
109 }
110 }
111
112 return 0;
113}
114
115static int query_formats(AVFilterContext *ctx)
116{
117 MergePlanesContext *s = ctx->priv;
118 AVFilterFormats *formats = NULL;
119 int i, ret;
120
121 s->outdesc = av_pix_fmt_desc_get(s->out_fmt);
122 for (i = 0; av_pix_fmt_desc_get(i); i++) {
123 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i);
124 if (desc->comp[0].depth == s->outdesc->comp[0].depth &&
125 (desc->comp[0].depth <= 8 || (desc->flags & AV_PIX_FMT_FLAG_BE) == (s->outdesc->flags & AV_PIX_FMT_FLAG_BE)) &&
126 av_pix_fmt_count_planes(i) == desc->nb_components &&
127 (ret = ff_add_format(&formats, i)) < 0)
128 return ret;
129 }
130
131 for (i = 0; i < s->nb_inputs; i++)
132 if ((ret = ff_formats_ref(formats, &ctx->inputs[i]->out_formats)) < 0)
133 return ret;
134
135 formats = NULL;
136 if ((ret = ff_add_format(&formats, s->out_fmt)) < 0 ||
137 (ret = ff_formats_ref(formats, &ctx->outputs[0]->in_formats)) < 0)
138 return ret;
139
140 return 0;
141}
142
143static int process_frame(FFFrameSync *fs)
144{
145 AVFilterContext *ctx = fs->parent;
146 AVFilterLink *outlink = ctx->outputs[0];
147 MergePlanesContext *s = fs->opaque;
148 AVFrame *in[4] = { NULL };
149 AVFrame *out;
150 int i, ret;
151
152 for (i = 0; i < s->nb_inputs; i++) {
153 if ((ret = ff_framesync_get_frame(&s->fs, i, &in[i], 0)) < 0)
154 return ret;
155 }
156
157 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
158 if (!out)
159 return AVERROR(ENOMEM);
160 out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
161
162 for (i = 0; i < s->nb_planes; i++) {
163 const int input = s->map[i][1];
164 const int plane = s->map[i][0];
165
166 av_image_copy_plane(out->data[i], out->linesize[i],
167 in[input]->data[plane], in[input]->linesize[plane],
168 s->planewidth[i], s->planeheight[i]);
169 }
170
171 return ff_filter_frame(outlink, out);
172}
173
174static int config_output(AVFilterLink *outlink)
175{
176 AVFilterContext *ctx = outlink->src;
177 MergePlanesContext *s = ctx->priv;
178 InputParam inputsp[4];
179 FFFrameSyncIn *in;
180 int i, ret;
181
182 if ((ret = ff_framesync_init(&s->fs, ctx, s->nb_inputs)) < 0)
183 return ret;
184
185 in = s->fs.in;
186 s->fs.opaque = s;
187 s->fs.on_event = process_frame;
188
189 outlink->w = ctx->inputs[0]->w;
190 outlink->h = ctx->inputs[0]->h;
191 outlink->time_base = ctx->inputs[0]->time_base;
192 outlink->frame_rate = ctx->inputs[0]->frame_rate;
193 outlink->sample_aspect_ratio = ctx->inputs[0]->sample_aspect_ratio;
194
195 s->planewidth[1] =
196 s->planewidth[2] = AV_CEIL_RSHIFT(((s->outdesc->comp[1].depth > 8) + 1) * outlink->w, s->outdesc->log2_chroma_w);
197 s->planewidth[0] =
198 s->planewidth[3] = ((s->outdesc->comp[0].depth > 8) + 1) * outlink->w;
199 s->planeheight[1] =
200 s->planeheight[2] = AV_CEIL_RSHIFT(outlink->h, s->outdesc->log2_chroma_h);
201 s->planeheight[0] =
202 s->planeheight[3] = outlink->h;
203
204 for (i = 0; i < s->nb_inputs; i++) {
205 InputParam *inputp = &inputsp[i];
206 AVFilterLink *inlink = ctx->inputs[i];
207 const AVPixFmtDescriptor *indesc = av_pix_fmt_desc_get(inlink->format);
208 int j;
209
210 if (outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num ||
211 outlink->sample_aspect_ratio.den != inlink->sample_aspect_ratio.den) {
212 av_log(ctx, AV_LOG_ERROR, "input #%d link %s SAR %d:%d "
213 "does not match output link %s SAR %d:%d\n",
214 i, ctx->input_pads[i].name,
215 inlink->sample_aspect_ratio.num,
216 inlink->sample_aspect_ratio.den,
217 ctx->output_pads[0].name,
218 outlink->sample_aspect_ratio.num,
219 outlink->sample_aspect_ratio.den);
220 return AVERROR(EINVAL);
221 }
222
223 inputp->planewidth[1] =
224 inputp->planewidth[2] = AV_CEIL_RSHIFT(((indesc->comp[1].depth > 8) + 1) * inlink->w, indesc->log2_chroma_w);
225 inputp->planewidth[0] =
226 inputp->planewidth[3] = ((indesc->comp[0].depth > 8) + 1) * inlink->w;
227 inputp->planeheight[1] =
228 inputp->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, indesc->log2_chroma_h);
229 inputp->planeheight[0] =
230 inputp->planeheight[3] = inlink->h;
231 inputp->nb_planes = av_pix_fmt_count_planes(inlink->format);
232
233 for (j = 0; j < inputp->nb_planes; j++)
234 inputp->depth[j] = indesc->comp[j].depth;
235
236 in[i].time_base = inlink->time_base;
237 in[i].sync = 1;
238 in[i].before = EXT_STOP;
239 in[i].after = EXT_STOP;
240 }
241
242 for (i = 0; i < s->nb_planes; i++) {
243 const int input = s->map[i][1];
244 const int plane = s->map[i][0];
245 InputParam *inputp = &inputsp[input];
246
247 if (plane + 1 > inputp->nb_planes) {
248 av_log(ctx, AV_LOG_ERROR, "input %d does not have %d plane\n",
249 input, plane);
250 goto fail;
251 }
252 if (s->outdesc->comp[i].depth != inputp->depth[plane]) {
253 av_log(ctx, AV_LOG_ERROR, "output plane %d depth %d does not "
254 "match input %d plane %d depth %d\n",
255 i, s->outdesc->comp[i].depth,
256 input, plane, inputp->depth[plane]);
257 goto fail;
258 }
259 if (s->planewidth[i] != inputp->planewidth[plane]) {
260 av_log(ctx, AV_LOG_ERROR, "output plane %d width %d does not "
261 "match input %d plane %d width %d\n",
262 i, s->planewidth[i],
263 input, plane, inputp->planewidth[plane]);
264 goto fail;
265 }
266 if (s->planeheight[i] != inputp->planeheight[plane]) {
267 av_log(ctx, AV_LOG_ERROR, "output plane %d height %d does not "
268 "match input %d plane %d height %d\n",
269 i, s->planeheight[i],
270 input, plane, inputp->planeheight[plane]);
271 goto fail;
272 }
273 }
274
275 return ff_framesync_configure(&s->fs);
276fail:
277 return AVERROR(EINVAL);
278}
279
280static int request_frame(AVFilterLink *outlink)
281{
282 MergePlanesContext *s = outlink->src->priv;
283 return ff_framesync_request_frame(&s->fs, outlink);
284}
285
286static av_cold void uninit(AVFilterContext *ctx)
287{
288 MergePlanesContext *s = ctx->priv;
289 int i;
290
291 ff_framesync_uninit(&s->fs);
292
293 for (i = 0; i < ctx->nb_inputs; i++)
294 av_freep(&ctx->input_pads[i].name);
295}
296
297static const AVFilterPad mergeplanes_outputs[] = {
298 {
299 .name = "default",
300 .type = AVMEDIA_TYPE_VIDEO,
301 .config_props = config_output,
302 .request_frame = request_frame,
303 },
304 { NULL }
305};
306
307AVFilter ff_vf_mergeplanes = {
308 .name = "mergeplanes",
309 .description = NULL_IF_CONFIG_SMALL("Merge planes."),
310 .priv_size = sizeof(MergePlanesContext),
311 .priv_class = &mergeplanes_class,
312 .init = init,
313 .uninit = uninit,
314 .query_formats = query_formats,
315 .inputs = NULL,
316 .outputs = mergeplanes_outputs,
317 .flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
318};
319
generated by cgit at 2024-05-17 06:07:14 (GMT)