diff options
| -rw-r--r-- | Changelog | 1 | ||||
| -rw-r--r-- | doc/filters.texi | 38 | ||||
| -rw-r--r-- | libavfilter/Makefile | 1 | ||||
| -rw-r--r-- | libavfilter/allfilters.c | 1 | ||||
| -rw-r--r-- | libavfilter/version.h | 2 | ||||
| -rw-r--r-- | libavfilter/vf_extractplanes.c | 254 |
6 files changed, 296 insertions, 1 deletions
@@ -38,6 +38,7 @@ version <next>: - ffmpeg -t and -ss (output-only) options are now sample-accurate when transcoding audio - Matroska muxer can now put the index at the beginning of the file. +- extractplanes filter version 1.2: diff --git a/doc/filters.texi b/doc/filters.texi index a62d9772f8..f80df081eb 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -3320,6 +3320,44 @@ Example: edgedetect=low=0.1:high=0.4 @end example +@section extractplanes + +Extract color channel components from input video stream into +separate grayscale video streams. + +The filter accepts the following option: + +@table @option +@item planes +Set plane(s) to extract. + +Available values for planes are: +@table @samp +@item y +@item u +@item v +@item a +@item r +@item g +@item b +@end table + +Choosing planes not available in the input will result in an error. +That means you cannot select @code{r}, @code{g}, @code{b} planes +with @code{y}, @code{u}, @code{v} planes at same time. +@end table + +@subsection Examples + +@itemize +@item +Extract luma, u and v color channel component from input video frame +into 3 grayscale outputs: +@example +ffmpeg -i video.avi -filter_complex 'extractplanes=y+u+v[y][u][v]' -map '[y]' y.avi -map '[u]' u.avi -map '[v]' v.avi +@end example +@end itemize + @section fade Apply fade-in/out effect to input video. diff --git a/libavfilter/Makefile b/libavfilter/Makefile index 947b070e88..f0e703e403 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -121,6 +121,7 @@ OBJS-$(CONFIG_DESHAKE_FILTER) += vf_deshake.o OBJS-$(CONFIG_DRAWBOX_FILTER) += vf_drawbox.o OBJS-$(CONFIG_DRAWTEXT_FILTER) += vf_drawtext.o OBJS-$(CONFIG_EDGEDETECT_FILTER) += vf_edgedetect.o +OBJS-$(CONFIG_EXTRACTPLANES_FILTER) += vf_extractplanes.o OBJS-$(CONFIG_FADE_FILTER) += vf_fade.o OBJS-$(CONFIG_FIELD_FILTER) += vf_field.o OBJS-$(CONFIG_FIELDMATCH_FILTER) += vf_fieldmatch.o diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index 228a22d896..b8f273dde1 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -119,6 +119,7 @@ void avfilter_register_all(void) REGISTER_FILTER(DRAWBOX, drawbox, vf); REGISTER_FILTER(DRAWTEXT, drawtext, vf); REGISTER_FILTER(EDGEDETECT, edgedetect, vf); + REGISTER_FILTER(EXTRACTPLANES, extractplanes, vf); REGISTER_FILTER(FADE, fade, vf); REGISTER_FILTER(FIELD, field, vf); REGISTER_FILTER(FIELDMATCH, fieldmatch, vf); diff --git a/libavfilter/version.h b/libavfilter/version.h index 21f8d5f73a..fed57614f0 100644 --- a/libavfilter/version.h +++ b/libavfilter/version.h @@ -29,7 +29,7 @@ #include "libavutil/avutil.h" #define LIBAVFILTER_VERSION_MAJOR 3 -#define LIBAVFILTER_VERSION_MINOR 62 +#define LIBAVFILTER_VERSION_MINOR 63 #define LIBAVFILTER_VERSION_MICRO 100 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \ diff --git a/libavfilter/vf_extractplanes.c b/libavfilter/vf_extractplanes.c new file mode 100644 index 0000000000..028813a948 --- /dev/null +++ b/libavfilter/vf_extractplanes.c @@ -0,0 +1,254 @@ +/* + * Copyright (c) 2013 Paul B Mahol + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavutil/avstring.h" +#include "libavutil/imgutils.h" +#include "libavutil/opt.h" +#include "libavutil/pixdesc.h" +#include "avfilter.h" +#include "internal.h" + +#define PLANE_R 0x01 +#define PLANE_G 0x02 +#define PLANE_B 0x04 +#define PLANE_A 0x08 +#define PLANE_Y 0x10 +#define PLANE_U 0x20 +#define PLANE_V 0x40 + +typedef struct { + const AVClass *class; + int requested_planes; + int map[4]; + int linesize[4]; +} ExtractPlanesContext; + +#define OFFSET(x) offsetof(ExtractPlanesContext, x) +#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM +static const AVOption extractplanes_options[] = { + { "planes", "set planes", OFFSET(requested_planes), AV_OPT_TYPE_FLAGS, {.i64=1}, 1, 0xff, FLAGS, "flags"}, + { "y", "set luma plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_Y}, 0, 0, FLAGS, "flags"}, + { "u", "set u plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_U}, 0, 0, FLAGS, "flags"}, + { "v", "set v plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_V}, 0, 0, FLAGS, "flags"}, + { "g", "set green plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_G}, 0, 0, FLAGS, "flags"}, + { "r", "set red plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_R}, 0, 0, FLAGS, "flags"}, + { "b", "set blue plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_B}, 0, 0, FLAGS, "flags"}, + { "a", "set alpha plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_A}, 0, 0, FLAGS, "flags"}, + { NULL } +}; + +AVFILTER_DEFINE_CLASS(extractplanes); + +static int query_formats(AVFilterContext *ctx) +{ + static const enum AVPixelFormat in_pixfmts[] = { + AV_PIX_FMT_YUV410P, + AV_PIX_FMT_YUV411P, + AV_PIX_FMT_YUV440P, + AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, + AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P, + AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, + AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P, + AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, + AV_PIX_FMT_YUV420P16LE, AV_PIX_FMT_YUVA420P16LE, + AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUVA420P16BE, + AV_PIX_FMT_YUV422P16LE, AV_PIX_FMT_YUVA422P16LE, + AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUVA422P16BE, + AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUVA444P16LE, + AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUVA444P16BE, + AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A, + AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_GRAY16BE, + AV_PIX_FMT_GBRP, + AV_PIX_FMT_GBRP16LE, AV_PIX_FMT_GBRP16BE, + AV_PIX_FMT_NONE, + }; + static const enum AVPixelFormat out8_pixfmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE }; + static const enum AVPixelFormat out16le_pixfmts[] = { AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_NONE }; + static const enum AVPixelFormat out16be_pixfmts[] = { AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE }; + const enum AVPixelFormat *out_pixfmts; + const AVPixFmtDescriptor *desc; + AVFilterFormats *avff; + int i, depth = 0, be = 0; + + if (!ctx->inputs[0]->in_formats || + !ctx->inputs[0]->in_formats->format_count) { + return AVERROR(EAGAIN); + } + + if (!ctx->inputs[0]->out_formats) + ff_formats_ref(ff_make_format_list(in_pixfmts), &ctx->inputs[0]->out_formats); + + avff = ctx->inputs[0]->in_formats; + desc = av_pix_fmt_desc_get(avff->formats[0]); + depth = desc->comp[0].depth_minus1; + be = desc->flags & PIX_FMT_BE; + for (i = 1; i < avff->format_count; i++) { + desc = av_pix_fmt_desc_get(avff->formats[i]); + if (depth != desc->comp[0].depth_minus1 || + be != (desc->flags & PIX_FMT_BE)) { + return AVERROR(EAGAIN); + } + } + + if (depth == 7) + out_pixfmts = out8_pixfmts; + else if (be) + out_pixfmts = out16be_pixfmts; + else + out_pixfmts = out16le_pixfmts; + + for (i = 0; i < ctx->nb_outputs; i++) + ff_formats_ref(ff_make_format_list(out_pixfmts), &ctx->outputs[i]->in_formats); + return 0; +} + +static int config_input(AVFilterLink *inlink) +{ + AVFilterContext *ctx = inlink->dst; + ExtractPlanesContext *e = ctx->priv; + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); + int plane_avail, ret; + + plane_avail = ((desc->flags & PIX_FMT_RGB) ? PLANE_R|PLANE_G|PLANE_B : + PLANE_Y | + ((desc->nb_components > 2) ? PLANE_U|PLANE_V : 0)) | + ((desc->flags & PIX_FMT_ALPHA) ? PLANE_A : 0); + if (e->requested_planes & ~plane_avail) { + av_log(ctx, AV_LOG_ERROR, "Requested planes not available.\n"); + return AVERROR(EINVAL); + } + if ((ret = av_image_fill_linesizes(e->linesize, inlink->format, inlink->w)) < 0) + return ret; + + return 0; +} + +static int config_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + AVFilterLink *inlink = ctx->inputs[0]; + ExtractPlanesContext *e = ctx->priv; + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); + const int output = outlink->srcpad - ctx->output_pads; + + if (e->map[output] == 1 || e->map[output] == 2) { + outlink->h = inlink->h >> desc->log2_chroma_h; + outlink->w = inlink->w >> desc->log2_chroma_w; + } + + return 0; +} + +static int filter_frame(AVFilterLink *inlink, AVFrame *frame) +{ + AVFilterContext *ctx = inlink->dst; + ExtractPlanesContext *e = ctx->priv; + int i, eof = 0, ret = 0; + + for (i = 0; i < ctx->nb_outputs; i++) { + AVFilterLink *outlink = ctx->outputs[i]; + const int idx = e->map[i]; + AVFrame *out; + + if (outlink->closed || !frame->data[idx]) + continue; + + out = ff_get_video_buffer(outlink, outlink->w, outlink->h); + if (!out) { + ret = AVERROR(ENOMEM); + break; + } + av_frame_copy_props(out, frame); + + av_image_copy_plane(out->data[0], out->linesize[0], + frame->data[idx], frame->linesize[idx], + e->linesize[idx], outlink->h); + ret = ff_filter_frame(outlink, out); + if (ret == AVERROR_EOF) + eof++; + else if (ret < 0) + break; + } + av_frame_free(&frame); + + if (eof == ctx->nb_outputs) + ret = AVERROR_EOF; + else if (ret == AVERROR_EOF) + ret = 0; + return ret; +} + +static int init(AVFilterContext *ctx) +{ + ExtractPlanesContext *e = ctx->priv; + int planes = (e->requested_planes & 0xf) | (e->requested_planes >> 4); + int i; + + for (i = 0; i < 4; i++) { + char *name; + AVFilterPad pad = { 0 }; + + if (!(planes & (1 << i))) + continue; + + name = av_asprintf("out%d", ctx->nb_outputs); + if (!name) + return AVERROR(ENOMEM); + e->map[ctx->nb_outputs] = i; + pad.name = name; + pad.type = AVMEDIA_TYPE_VIDEO; + pad.config_props = config_output; + + ff_insert_outpad(ctx, ctx->nb_outputs, &pad); + } + + return 0; +} + +static void uninit(AVFilterContext *ctx) +{ + int i; + + for (i = 0; i < ctx->nb_outputs; i++) + av_freep(&ctx->output_pads[i].name); +} + +static const AVFilterPad extractplanes_inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .filter_frame = filter_frame, + .config_props = config_input, + }, + { NULL } +}; + +AVFilter avfilter_vf_extractplanes = { + .name = "extractplanes", + .description = NULL_IF_CONFIG_SMALL("Extract planes as grayscale frames."), + .priv_size = sizeof(ExtractPlanesContext), + .priv_class = &extractplanes_class, + .init = init, + .uninit = uninit, + .query_formats = query_formats, + .inputs = extractplanes_inputs, + .outputs = NULL, + .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, +}; |