2 * Copyright (c) 2013 Paul B Mahol
4 * This file is part of FFmpeg.
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.
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.
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
21 #include "libavutil/avstring.h"
22 #include "libavutil/imgutils.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/pixdesc.h"
26 #include "drawutils.h"
45 } ExtractPlanesContext;
47 #define OFFSET(x) offsetof(ExtractPlanesContext, x)
48 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
49 static const AVOption extractplanes_options[] = {
50 { "planes", "set planes", OFFSET(requested_planes), AV_OPT_TYPE_FLAGS, {.i64=1}, 1, 0xff, FLAGS, "flags"},
51 { "y", "set luma plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_Y}, 0, 0, FLAGS, "flags"},
52 { "u", "set u plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_U}, 0, 0, FLAGS, "flags"},
53 { "v", "set v plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_V}, 0, 0, FLAGS, "flags"},
54 { "r", "set red plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_R}, 0, 0, FLAGS, "flags"},
55 { "g", "set green plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_G}, 0, 0, FLAGS, "flags"},
56 { "b", "set blue plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_B}, 0, 0, FLAGS, "flags"},
57 { "a", "set alpha plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_A}, 0, 0, FLAGS, "flags"},
61 AVFILTER_DEFINE_CLASS(extractplanes);
63 static int query_formats(AVFilterContext *ctx)
65 static const enum AVPixelFormat in_pixfmts_le[] = {
69 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
70 AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P,
71 AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
72 AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
74 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P,
75 AV_PIX_FMT_YUV420P16LE, AV_PIX_FMT_YUVA420P16LE,
76 AV_PIX_FMT_YUV422P16LE, AV_PIX_FMT_YUVA422P16LE,
77 AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUVA444P16LE,
78 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A,
79 AV_PIX_FMT_YA16LE, AV_PIX_FMT_GRAY16LE,
80 AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
81 AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
82 AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
83 AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
84 AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
85 AV_PIX_FMT_RGB48LE, AV_PIX_FMT_BGR48LE,
86 AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_BGRA64LE,
87 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
88 AV_PIX_FMT_GBRP16LE, AV_PIX_FMT_GBRAP16LE,
91 static const enum AVPixelFormat in_pixfmts_be[] = {
95 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
96 AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P,
97 AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
98 AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
100 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P,
101 AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUVA420P16BE,
102 AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUVA422P16BE,
103 AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUVA444P16BE,
104 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A,
105 AV_PIX_FMT_YA16BE, AV_PIX_FMT_GRAY16BE,
106 AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
107 AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
108 AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
109 AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
110 AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
111 AV_PIX_FMT_RGB48BE, AV_PIX_FMT_BGR48BE,
112 AV_PIX_FMT_RGBA64BE, AV_PIX_FMT_BGRA64BE,
113 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
114 AV_PIX_FMT_GBRP16BE, AV_PIX_FMT_GBRAP16BE,
117 static const enum AVPixelFormat out8_pixfmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
118 static const enum AVPixelFormat out16le_pixfmts[] = { AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_NONE };
119 static const enum AVPixelFormat out16be_pixfmts[] = { AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE };
120 const enum AVPixelFormat *out_pixfmts, *in_pixfmts;
121 const AVPixFmtDescriptor *desc;
122 AVFilterFormats *avff;
123 int i, ret, depth = 0, be = 0;
125 if (!ctx->inputs[0]->in_formats ||
126 !ctx->inputs[0]->in_formats->nb_formats) {
127 return AVERROR(EAGAIN);
130 avff = ctx->inputs[0]->in_formats;
131 desc = av_pix_fmt_desc_get(avff->formats[0]);
132 depth = desc->comp[0].depth;
133 be = desc->flags & AV_PIX_FMT_FLAG_BE;
135 in_pixfmts = in_pixfmts_be;
137 in_pixfmts = in_pixfmts_le;
139 if (!ctx->inputs[0]->out_formats)
140 if ((ret = ff_formats_ref(ff_make_format_list(in_pixfmts), &ctx->inputs[0]->out_formats)) < 0)
143 for (i = 1; i < avff->nb_formats; i++) {
144 desc = av_pix_fmt_desc_get(avff->formats[i]);
145 if (depth != desc->comp[0].depth ||
146 be != (desc->flags & AV_PIX_FMT_FLAG_BE)) {
147 return AVERROR(EAGAIN);
152 out_pixfmts = out8_pixfmts;
154 out_pixfmts = out16be_pixfmts;
156 out_pixfmts = out16le_pixfmts;
158 for (i = 0; i < ctx->nb_outputs; i++)
159 if ((ret = ff_formats_ref(ff_make_format_list(out_pixfmts), &ctx->outputs[i]->in_formats)) < 0)
164 static int config_input(AVFilterLink *inlink)
166 AVFilterContext *ctx = inlink->dst;
167 ExtractPlanesContext *s = ctx->priv;
168 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
169 int plane_avail, ret, i;
172 plane_avail = ((desc->flags & AV_PIX_FMT_FLAG_RGB) ? PLANE_R|PLANE_G|PLANE_B :
174 ((desc->nb_components > 2) ? PLANE_U|PLANE_V : 0)) |
175 ((desc->flags & AV_PIX_FMT_FLAG_ALPHA) ? PLANE_A : 0);
176 if (s->requested_planes & ~plane_avail) {
177 av_log(ctx, AV_LOG_ERROR, "Requested planes not available.\n");
178 return AVERROR(EINVAL);
180 if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
183 s->depth = desc->comp[0].depth >> 3;
184 s->step = av_get_padded_bits_per_pixel(desc) >> 3;
185 s->is_packed = !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
186 (desc->nb_components > 1);
187 if (desc->flags & AV_PIX_FMT_FLAG_RGB) {
188 ff_fill_rgba_map(rgba_map, inlink->format);
189 for (i = 0; i < 4; i++)
190 s->map[i] = rgba_map[s->map[i]];
196 static int config_output(AVFilterLink *outlink)
198 AVFilterContext *ctx = outlink->src;
199 AVFilterLink *inlink = ctx->inputs[0];
200 ExtractPlanesContext *s = ctx->priv;
201 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
202 const int output = outlink->srcpad - ctx->output_pads;
204 if (s->map[output] == 1 || s->map[output] == 2) {
205 outlink->h = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
206 outlink->w = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
212 static void extract_from_packed(uint8_t *dst, int dst_linesize,
213 const uint8_t *src, int src_linesize,
214 int width, int height,
215 int depth, int step, int comp)
219 for (y = 0; y < height; y++) {
222 for (x = 0; x < width; x++)
223 dst[x] = src[x * step + comp];
226 for (x = 0; x < width; x++) {
227 dst[x * 2 ] = src[x * step + comp * 2 ];
228 dst[x * 2 + 1] = src[x * step + comp * 2 + 1];
237 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
239 AVFilterContext *ctx = inlink->dst;
240 ExtractPlanesContext *s = ctx->priv;
241 int i, eof = 0, ret = 0;
243 for (i = 0; i < ctx->nb_outputs; i++) {
244 AVFilterLink *outlink = ctx->outputs[i];
245 const int idx = s->map[i];
251 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
253 ret = AVERROR(ENOMEM);
256 av_frame_copy_props(out, frame);
259 extract_from_packed(out->data[0], out->linesize[0],
260 frame->data[0], frame->linesize[0],
261 outlink->w, outlink->h,
265 av_image_copy_plane(out->data[0], out->linesize[0],
266 frame->data[idx], frame->linesize[idx],
267 s->linesize[idx], outlink->h);
270 ret = ff_filter_frame(outlink, out);
271 if (ret == AVERROR_EOF)
276 av_frame_free(&frame);
278 if (eof == ctx->nb_outputs)
280 else if (ret == AVERROR_EOF)
285 static av_cold int init(AVFilterContext *ctx)
287 ExtractPlanesContext *s = ctx->priv;
288 int planes = (s->requested_planes & 0xf) | (s->requested_planes >> 4);
291 for (i = 0; i < 4; i++) {
293 AVFilterPad pad = { 0 };
295 if (!(planes & (1 << i)))
298 name = av_asprintf("out%d", ctx->nb_outputs);
300 return AVERROR(ENOMEM);
301 s->map[ctx->nb_outputs] = i;
303 pad.type = AVMEDIA_TYPE_VIDEO;
304 pad.config_props = config_output;
306 ff_insert_outpad(ctx, ctx->nb_outputs, &pad);
312 static av_cold void uninit(AVFilterContext *ctx)
316 for (i = 0; i < ctx->nb_outputs; i++)
317 av_freep(&ctx->output_pads[i].name);
320 static const AVFilterPad extractplanes_inputs[] = {
323 .type = AVMEDIA_TYPE_VIDEO,
324 .filter_frame = filter_frame,
325 .config_props = config_input,
330 AVFilter ff_vf_extractplanes = {
331 .name = "extractplanes",
332 .description = NULL_IF_CONFIG_SMALL("Extract planes as grayscale frames."),
333 .priv_size = sizeof(ExtractPlanesContext),
334 .priv_class = &extractplanes_class,
337 .query_formats = query_formats,
338 .inputs = extractplanes_inputs,
340 .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
343 #if CONFIG_ALPHAEXTRACT_FILTER
345 static av_cold int init_alphaextract(AVFilterContext *ctx)
347 ExtractPlanesContext *s = ctx->priv;
349 s->requested_planes = PLANE_A;
354 AVFilter ff_vf_alphaextract = {
355 .name = "alphaextract",
356 .description = NULL_IF_CONFIG_SMALL("Extract an alpha channel as a "
357 "grayscale image component."),
358 .priv_size = sizeof(ExtractPlanesContext),
359 .init = init_alphaextract,
361 .query_formats = query_formats,
362 .inputs = extractplanes_inputs,
364 .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
366 #endif /* CONFIG_ALPHAEXTRACT_FILTER */