367 lines
12 KiB
C
367 lines
12 KiB
C
/*
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* Copyright (c) 2013 Paul B Mahol
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/avstring.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "drawutils.h"
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#include "internal.h"
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#define PLANE_R 0x01
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#define PLANE_G 0x02
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#define PLANE_B 0x04
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#define PLANE_A 0x08
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#define PLANE_Y 0x10
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#define PLANE_U 0x20
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#define PLANE_V 0x40
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typedef struct {
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const AVClass *class;
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int requested_planes;
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int map[4];
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int linesize[4];
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int is_packed;
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int depth;
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int step;
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} ExtractPlanesContext;
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#define OFFSET(x) offsetof(ExtractPlanesContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption extractplanes_options[] = {
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{ "planes", "set planes", OFFSET(requested_planes), AV_OPT_TYPE_FLAGS, {.i64=1}, 1, 0xff, FLAGS, "flags"},
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{ "y", "set luma plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_Y}, 0, 0, FLAGS, "flags"},
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{ "u", "set u plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_U}, 0, 0, FLAGS, "flags"},
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{ "v", "set v plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_V}, 0, 0, FLAGS, "flags"},
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{ "r", "set red plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_R}, 0, 0, FLAGS, "flags"},
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{ "g", "set green plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_G}, 0, 0, FLAGS, "flags"},
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{ "b", "set blue plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_B}, 0, 0, FLAGS, "flags"},
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{ "a", "set alpha plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_A}, 0, 0, FLAGS, "flags"},
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(extractplanes);
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static int query_formats(AVFilterContext *ctx)
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{
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static const enum AVPixelFormat in_pixfmts_le[] = {
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AV_PIX_FMT_YUV410P,
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AV_PIX_FMT_YUV411P,
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AV_PIX_FMT_YUV440P,
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AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
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AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P,
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AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
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AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
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AV_PIX_FMT_YUVJ411P,
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P,
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AV_PIX_FMT_YUV420P16LE, AV_PIX_FMT_YUVA420P16LE,
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AV_PIX_FMT_YUV422P16LE, AV_PIX_FMT_YUVA422P16LE,
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AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUVA444P16LE,
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AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A,
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AV_PIX_FMT_YA16LE, AV_PIX_FMT_GRAY16LE,
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AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
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AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
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AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
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AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
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AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
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AV_PIX_FMT_RGB48LE, AV_PIX_FMT_BGR48LE,
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AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_BGRA64LE,
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
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AV_PIX_FMT_GBRP16LE, AV_PIX_FMT_GBRAP16LE,
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AV_PIX_FMT_NONE,
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};
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static const enum AVPixelFormat in_pixfmts_be[] = {
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AV_PIX_FMT_YUV410P,
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AV_PIX_FMT_YUV411P,
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AV_PIX_FMT_YUV440P,
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AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
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AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P,
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AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
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AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
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AV_PIX_FMT_YUVJ411P,
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P,
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AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUVA420P16BE,
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AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUVA422P16BE,
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AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUVA444P16BE,
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AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A,
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AV_PIX_FMT_YA16BE, AV_PIX_FMT_GRAY16BE,
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AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
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AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
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AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
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AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
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AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
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AV_PIX_FMT_RGB48BE, AV_PIX_FMT_BGR48BE,
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AV_PIX_FMT_RGBA64BE, AV_PIX_FMT_BGRA64BE,
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
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AV_PIX_FMT_GBRP16BE, AV_PIX_FMT_GBRAP16BE,
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AV_PIX_FMT_NONE,
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};
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static const enum AVPixelFormat out8_pixfmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
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static const enum AVPixelFormat out16le_pixfmts[] = { AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_NONE };
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static const enum AVPixelFormat out16be_pixfmts[] = { AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE };
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const enum AVPixelFormat *out_pixfmts, *in_pixfmts;
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const AVPixFmtDescriptor *desc;
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AVFilterFormats *avff;
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int i, ret, depth = 0, be = 0;
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if (!ctx->inputs[0]->in_formats ||
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!ctx->inputs[0]->in_formats->nb_formats) {
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return AVERROR(EAGAIN);
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}
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avff = ctx->inputs[0]->in_formats;
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desc = av_pix_fmt_desc_get(avff->formats[0]);
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depth = desc->comp[0].depth;
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be = desc->flags & AV_PIX_FMT_FLAG_BE;
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if (be) {
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in_pixfmts = in_pixfmts_be;
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} else {
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in_pixfmts = in_pixfmts_le;
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}
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if (!ctx->inputs[0]->out_formats)
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if ((ret = ff_formats_ref(ff_make_format_list(in_pixfmts), &ctx->inputs[0]->out_formats)) < 0)
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return ret;
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for (i = 1; i < avff->nb_formats; i++) {
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desc = av_pix_fmt_desc_get(avff->formats[i]);
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if (depth != desc->comp[0].depth ||
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be != (desc->flags & AV_PIX_FMT_FLAG_BE)) {
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return AVERROR(EAGAIN);
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}
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}
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if (depth == 8)
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out_pixfmts = out8_pixfmts;
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else if (be)
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out_pixfmts = out16be_pixfmts;
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else
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out_pixfmts = out16le_pixfmts;
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for (i = 0; i < ctx->nb_outputs; i++)
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if ((ret = ff_formats_ref(ff_make_format_list(out_pixfmts), &ctx->outputs[i]->in_formats)) < 0)
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return ret;
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return 0;
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}
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static int config_input(AVFilterLink *inlink)
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{
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AVFilterContext *ctx = inlink->dst;
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ExtractPlanesContext *s = ctx->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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int plane_avail, ret, i;
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uint8_t rgba_map[4];
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plane_avail = ((desc->flags & AV_PIX_FMT_FLAG_RGB) ? PLANE_R|PLANE_G|PLANE_B :
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PLANE_Y |
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((desc->nb_components > 2) ? PLANE_U|PLANE_V : 0)) |
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((desc->flags & AV_PIX_FMT_FLAG_ALPHA) ? PLANE_A : 0);
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if (s->requested_planes & ~plane_avail) {
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av_log(ctx, AV_LOG_ERROR, "Requested planes not available.\n");
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return AVERROR(EINVAL);
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}
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if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
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return ret;
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s->depth = desc->comp[0].depth >> 3;
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s->step = av_get_padded_bits_per_pixel(desc) >> 3;
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s->is_packed = !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
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(desc->nb_components > 1);
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if (desc->flags & AV_PIX_FMT_FLAG_RGB) {
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ff_fill_rgba_map(rgba_map, inlink->format);
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for (i = 0; i < 4; i++)
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s->map[i] = rgba_map[s->map[i]];
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}
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return 0;
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}
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static int config_output(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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AVFilterLink *inlink = ctx->inputs[0];
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ExtractPlanesContext *s = ctx->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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const int output = outlink->srcpad - ctx->output_pads;
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if (s->map[output] == 1 || s->map[output] == 2) {
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outlink->h = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
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outlink->w = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
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}
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return 0;
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}
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static void extract_from_packed(uint8_t *dst, int dst_linesize,
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const uint8_t *src, int src_linesize,
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int width, int height,
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int depth, int step, int comp)
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{
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int x, y;
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for (y = 0; y < height; y++) {
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switch (depth) {
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case 1:
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for (x = 0; x < width; x++)
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dst[x] = src[x * step + comp];
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break;
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case 2:
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for (x = 0; x < width; x++) {
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dst[x * 2 ] = src[x * step + comp * 2 ];
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dst[x * 2 + 1] = src[x * step + comp * 2 + 1];
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}
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break;
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}
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dst += dst_linesize;
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src += src_linesize;
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}
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
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{
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AVFilterContext *ctx = inlink->dst;
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ExtractPlanesContext *s = ctx->priv;
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int i, eof = 0, ret = 0;
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for (i = 0; i < ctx->nb_outputs; i++) {
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AVFilterLink *outlink = ctx->outputs[i];
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const int idx = s->map[i];
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AVFrame *out;
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if (outlink->status)
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continue;
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!out) {
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ret = AVERROR(ENOMEM);
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break;
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}
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av_frame_copy_props(out, frame);
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if (s->is_packed) {
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extract_from_packed(out->data[0], out->linesize[0],
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frame->data[0], frame->linesize[0],
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outlink->w, outlink->h,
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s->depth,
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s->step, idx);
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} else {
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av_image_copy_plane(out->data[0], out->linesize[0],
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frame->data[idx], frame->linesize[idx],
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s->linesize[idx], outlink->h);
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}
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ret = ff_filter_frame(outlink, out);
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if (ret == AVERROR_EOF)
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eof++;
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else if (ret < 0)
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break;
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}
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av_frame_free(&frame);
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if (eof == ctx->nb_outputs)
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ret = AVERROR_EOF;
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else if (ret == AVERROR_EOF)
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ret = 0;
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return ret;
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}
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static av_cold int init(AVFilterContext *ctx)
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{
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ExtractPlanesContext *s = ctx->priv;
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int planes = (s->requested_planes & 0xf) | (s->requested_planes >> 4);
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int i;
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for (i = 0; i < 4; i++) {
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char *name;
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AVFilterPad pad = { 0 };
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if (!(planes & (1 << i)))
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continue;
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name = av_asprintf("out%d", ctx->nb_outputs);
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if (!name)
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return AVERROR(ENOMEM);
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s->map[ctx->nb_outputs] = i;
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pad.name = name;
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pad.type = AVMEDIA_TYPE_VIDEO;
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pad.config_props = config_output;
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ff_insert_outpad(ctx, ctx->nb_outputs, &pad);
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}
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return 0;
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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int i;
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for (i = 0; i < ctx->nb_outputs; i++)
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av_freep(&ctx->output_pads[i].name);
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}
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static const AVFilterPad extractplanes_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = filter_frame,
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.config_props = config_input,
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},
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{ NULL }
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};
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AVFilter ff_vf_extractplanes = {
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.name = "extractplanes",
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.description = NULL_IF_CONFIG_SMALL("Extract planes as grayscale frames."),
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.priv_size = sizeof(ExtractPlanesContext),
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.priv_class = &extractplanes_class,
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.init = init,
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.uninit = uninit,
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.query_formats = query_formats,
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.inputs = extractplanes_inputs,
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.outputs = NULL,
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.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
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};
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#if CONFIG_ALPHAEXTRACT_FILTER
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static av_cold int init_alphaextract(AVFilterContext *ctx)
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{
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ExtractPlanesContext *s = ctx->priv;
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s->requested_planes = PLANE_A;
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return init(ctx);
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}
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AVFilter ff_vf_alphaextract = {
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.name = "alphaextract",
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.description = NULL_IF_CONFIG_SMALL("Extract an alpha channel as a "
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"grayscale image component."),
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.priv_size = sizeof(ExtractPlanesContext),
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.init = init_alphaextract,
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.uninit = uninit,
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.query_formats = query_formats,
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.inputs = extractplanes_inputs,
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.outputs = NULL,
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.flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
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};
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#endif /* CONFIG_ALPHAEXTRACT_FILTER */
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