mirror of https://github.com/FFmpeg/FFmpeg.git
Paul B Mahol
12 years ago
parent
d29f9f4a0e
commit
ce322f4c19
6 changed files with 296 additions and 1 deletions
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/*
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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 "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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} 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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{ "g", "set green plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_G}, 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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{ "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[] = { |
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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_YUV444P, AV_PIX_FMT_YUVA444P, |
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AV_PIX_FMT_YUV420P16LE, AV_PIX_FMT_YUVA420P16LE, |
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AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUVA420P16BE, |
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AV_PIX_FMT_YUV422P16LE, AV_PIX_FMT_YUVA422P16LE, |
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AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUVA422P16BE, |
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AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUVA444P16LE, |
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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_GRAY16LE, AV_PIX_FMT_GRAY16BE, |
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AV_PIX_FMT_GBRP, |
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AV_PIX_FMT_GBRP16LE, AV_PIX_FMT_GBRP16BE, |
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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; |
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const AVPixFmtDescriptor *desc; |
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AVFilterFormats *avff; |
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int i, depth = 0, be = 0; |
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if (!ctx->inputs[0]->in_formats || |
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!ctx->inputs[0]->in_formats->format_count) { |
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return AVERROR(EAGAIN); |
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} |
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if (!ctx->inputs[0]->out_formats) |
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ff_formats_ref(ff_make_format_list(in_pixfmts), &ctx->inputs[0]->out_formats); |
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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_minus1; |
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be = desc->flags & PIX_FMT_BE; |
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for (i = 1; i < avff->format_count; i++) { |
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desc = av_pix_fmt_desc_get(avff->formats[i]); |
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if (depth != desc->comp[0].depth_minus1 || |
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be != (desc->flags & PIX_FMT_BE)) { |
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return AVERROR(EAGAIN); |
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} |
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} |
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if (depth == 7) |
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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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ff_formats_ref(ff_make_format_list(out_pixfmts), &ctx->outputs[i]->in_formats); |
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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 *e = ctx->priv; |
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
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int plane_avail, ret; |
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plane_avail = ((desc->flags & PIX_FMT_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 & PIX_FMT_ALPHA) ? PLANE_A : 0); |
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if (e->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(e->linesize, inlink->format, inlink->w)) < 0) |
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return ret; |
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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 *e = 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 (e->map[output] == 1 || e->map[output] == 2) { |
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outlink->h = inlink->h >> desc->log2_chroma_h; |
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outlink->w = 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 int filter_frame(AVFilterLink *inlink, AVFrame *frame) |
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{ |
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AVFilterContext *ctx = inlink->dst; |
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ExtractPlanesContext *e = 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 = e->map[i]; |
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AVFrame *out; |
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if (outlink->closed || !frame->data[idx]) |
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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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av_image_copy_plane(out->data[0], out->linesize[0], |
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frame->data[idx], frame->linesize[idx], |
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e->linesize[idx], outlink->h); |
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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 int init(AVFilterContext *ctx) |
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{ |
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ExtractPlanesContext *e = ctx->priv; |
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int planes = (e->requested_planes & 0xf) | (e->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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e->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 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 avfilter_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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