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[] = {
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_YUV420P16BE, AV_PIX_FMT_YUVA420P16BE,
77 AV_PIX_FMT_YUV422P16LE, AV_PIX_FMT_YUVA422P16LE,
78 AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUVA422P16BE,
79 AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUVA444P16LE,
80 AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUVA444P16BE,
81 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A,
82 AV_PIX_FMT_YA16LE, AV_PIX_FMT_YA16BE,
83 AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_GRAY16BE,
84 AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
85 AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
86 AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
87 AV_PIX_FMT_RGB48LE, AV_PIX_FMT_BGR48LE,
88 AV_PIX_FMT_RGB48BE, AV_PIX_FMT_BGR48BE,
89 AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_BGRA64LE,
90 AV_PIX_FMT_RGBA64BE, AV_PIX_FMT_BGRA64BE,
91 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
92 AV_PIX_FMT_GBRP16LE, AV_PIX_FMT_GBRP16BE,
93 AV_PIX_FMT_GBRAP16LE, AV_PIX_FMT_GBRAP16BE,
96 static const enum AVPixelFormat out8_pixfmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
97 static const enum AVPixelFormat out16le_pixfmts[] = { AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_NONE };
98 static const enum AVPixelFormat out16be_pixfmts[] = { AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE };
99 const enum AVPixelFormat *out_pixfmts;
100 const AVPixFmtDescriptor *desc;
101 AVFilterFormats *avff;
102 int i, ret, depth = 0, be = 0;
104 if (!ctx->inputs[0]->in_formats ||
105 !ctx->inputs[0]->in_formats->nb_formats) {
106 return AVERROR(EAGAIN);
109 if (!ctx->inputs[0]->out_formats)
110 if ((ret = ff_formats_ref(ff_make_format_list(in_pixfmts), &ctx->inputs[0]->out_formats)) < 0)
113 avff = ctx->inputs[0]->in_formats;
114 desc = av_pix_fmt_desc_get(avff->formats[0]);
115 depth = desc->comp[0].depth;
116 be = desc->flags & AV_PIX_FMT_FLAG_BE;
117 for (i = 1; i < avff->nb_formats; i++) {
118 desc = av_pix_fmt_desc_get(avff->formats[i]);
119 if (depth != desc->comp[0].depth ||
120 be != (desc->flags & AV_PIX_FMT_FLAG_BE)) {
121 return AVERROR(EAGAIN);
126 out_pixfmts = out8_pixfmts;
128 out_pixfmts = out16be_pixfmts;
130 out_pixfmts = out16le_pixfmts;
132 for (i = 0; i < ctx->nb_outputs; i++)
133 if ((ret = ff_formats_ref(ff_make_format_list(out_pixfmts), &ctx->outputs[i]->in_formats)) < 0)
138 static int config_input(AVFilterLink *inlink)
140 AVFilterContext *ctx = inlink->dst;
141 ExtractPlanesContext *s = ctx->priv;
142 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
143 int plane_avail, ret, i;
146 plane_avail = ((desc->flags & AV_PIX_FMT_FLAG_RGB) ? PLANE_R|PLANE_G|PLANE_B :
148 ((desc->nb_components > 2) ? PLANE_U|PLANE_V : 0)) |
149 ((desc->flags & AV_PIX_FMT_FLAG_ALPHA) ? PLANE_A : 0);
150 if (s->requested_planes & ~plane_avail) {
151 av_log(ctx, AV_LOG_ERROR, "Requested planes not available.\n");
152 return AVERROR(EINVAL);
154 if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
157 s->depth = desc->comp[0].depth >> 3;
158 s->step = av_get_padded_bits_per_pixel(desc) >> 3;
159 s->is_packed = !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
160 (desc->nb_components > 1);
161 if (desc->flags & AV_PIX_FMT_FLAG_RGB) {
162 ff_fill_rgba_map(rgba_map, inlink->format);
163 for (i = 0; i < 4; i++)
164 s->map[i] = rgba_map[s->map[i]];
170 static int config_output(AVFilterLink *outlink)
172 AVFilterContext *ctx = outlink->src;
173 AVFilterLink *inlink = ctx->inputs[0];
174 ExtractPlanesContext *s = ctx->priv;
175 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
176 const int output = outlink->srcpad - ctx->output_pads;
178 if (s->map[output] == 1 || s->map[output] == 2) {
179 outlink->h = FF_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
180 outlink->w = FF_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
186 static void extract_from_packed(uint8_t *dst, int dst_linesize,
187 const uint8_t *src, int src_linesize,
188 int width, int height,
189 int depth, int step, int comp)
193 for (y = 0; y < height; y++) {
196 for (x = 0; x < width; x++)
197 dst[x] = src[x * step + comp];
200 for (x = 0; x < width; x++) {
201 dst[x * 2 ] = src[x * step + comp * 2 ];
202 dst[x * 2 + 1] = src[x * step + comp * 2 + 1];
211 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
213 AVFilterContext *ctx = inlink->dst;
214 ExtractPlanesContext *s = ctx->priv;
215 int i, eof = 0, ret = 0;
217 for (i = 0; i < ctx->nb_outputs; i++) {
218 AVFilterLink *outlink = ctx->outputs[i];
219 const int idx = s->map[i];
225 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
227 ret = AVERROR(ENOMEM);
230 av_frame_copy_props(out, frame);
233 extract_from_packed(out->data[0], out->linesize[0],
234 frame->data[0], frame->linesize[0],
235 outlink->w, outlink->h,
239 av_image_copy_plane(out->data[0], out->linesize[0],
240 frame->data[idx], frame->linesize[idx],
241 s->linesize[idx], outlink->h);
244 ret = ff_filter_frame(outlink, out);
245 if (ret == AVERROR_EOF)
250 av_frame_free(&frame);
252 if (eof == ctx->nb_outputs)
254 else if (ret == AVERROR_EOF)
259 static av_cold int init(AVFilterContext *ctx)
261 ExtractPlanesContext *s = ctx->priv;
262 int planes = (s->requested_planes & 0xf) | (s->requested_planes >> 4);
265 for (i = 0; i < 4; i++) {
267 AVFilterPad pad = { 0 };
269 if (!(planes & (1 << i)))
272 name = av_asprintf("out%d", ctx->nb_outputs);
274 return AVERROR(ENOMEM);
275 s->map[ctx->nb_outputs] = i;
277 pad.type = AVMEDIA_TYPE_VIDEO;
278 pad.config_props = config_output;
280 ff_insert_outpad(ctx, ctx->nb_outputs, &pad);
286 static av_cold void uninit(AVFilterContext *ctx)
290 for (i = 0; i < ctx->nb_outputs; i++)
291 av_freep(&ctx->output_pads[i].name);
294 static const AVFilterPad extractplanes_inputs[] = {
297 .type = AVMEDIA_TYPE_VIDEO,
298 .filter_frame = filter_frame,
299 .config_props = config_input,
304 AVFilter ff_vf_extractplanes = {
305 .name = "extractplanes",
306 .description = NULL_IF_CONFIG_SMALL("Extract planes as grayscale frames."),
307 .priv_size = sizeof(ExtractPlanesContext),
308 .priv_class = &extractplanes_class,
311 .query_formats = query_formats,
312 .inputs = extractplanes_inputs,
314 .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
317 #if CONFIG_ALPHAEXTRACT_FILTER
319 static av_cold int init_alphaextract(AVFilterContext *ctx)
321 ExtractPlanesContext *s = ctx->priv;
323 s->requested_planes = PLANE_A;
328 AVFilter ff_vf_alphaextract = {
329 .name = "alphaextract",
330 .description = NULL_IF_CONFIG_SMALL("Extract an alpha channel as a "
331 "grayscale image component."),
332 .priv_size = sizeof(ExtractPlanesContext),
333 .init = init_alphaextract,
335 .query_formats = query_formats,
336 .inputs = extractplanes_inputs,
338 .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
340 #endif /* CONFIG_ALPHAEXTRACT_FILTER */