mirror of https://github.com/FFmpeg/FFmpeg.git
Paul B Mahol
8 years ago
parent
f85842b09e
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6 changed files with 246 additions and 1 deletions
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/*
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* Copyright (c) 2016 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/opt.h" |
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#include "libavutil/imgutils.h" |
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#include "avfilter.h" |
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#include "formats.h" |
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#include "internal.h" |
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#include "video.h" |
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typedef struct BPNContext { |
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const AVClass *class; |
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int bitplane; |
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int filter; |
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int nb_planes; |
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int planeheight[4]; |
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int planewidth[4]; |
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int depth; |
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} BPNContext; |
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#define OFFSET(x) offsetof(BPNContext, x) |
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
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static const AVOption bitplanenoise_options[] = { |
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{ "bitplane", "set bit plane to use for measuring noise", OFFSET(bitplane), AV_OPT_TYPE_INT, {.i64=1}, 1, 16, FLAGS}, |
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{ "filter", "show noisy pixels", OFFSET(filter), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
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{ NULL } |
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}; |
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AVFILTER_DEFINE_CLASS(bitplanenoise); |
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static int query_formats(AVFilterContext *ctx) |
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{ |
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static const enum AVPixelFormat pixfmts[] = { |
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, |
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AV_PIX_FMT_YUV440P, |
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AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P, |
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AV_PIX_FMT_YUVJ440P, |
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AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV420P9, |
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AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV420P10, |
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AV_PIX_FMT_YUV440P10, |
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AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12, |
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AV_PIX_FMT_YUV440P12, |
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AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14, |
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AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV420P16, |
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, |
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AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16, |
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AV_PIX_FMT_GRAY8, |
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AV_PIX_FMT_GRAY16, |
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AV_PIX_FMT_NONE |
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}; |
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AVFilterFormats *formats = ff_make_format_list(pixfmts); |
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if (!formats) |
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return AVERROR(ENOMEM); |
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return ff_set_common_formats(ctx, formats); |
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} |
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static int config_input(AVFilterLink *inlink) |
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{ |
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
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AVFilterContext *ctx = inlink->dst; |
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BPNContext *s = ctx->priv; |
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s->nb_planes = desc->nb_components; |
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s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h); |
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s->planeheight[0] = s->planeheight[3] = inlink->h; |
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s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w); |
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s->planewidth[0] = s->planewidth[3] = inlink->w; |
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s->depth = desc->comp[0].depth; |
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return 0; |
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} |
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#define CHECK_BIT(x, a, b, c) { \ |
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bit = (((val[(x)] & mask) == (val[(x) + (a)] & mask)) + \
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((val[(x)] & mask) == (val[(x) + (b)] & mask)) + \
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((val[(x)] & mask) == (val[(x) + (c)] & mask))) > 1; \
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if (dst) \
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dst[(x)] = factor * bit; \
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stats[plane] += bit; } |
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static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
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{ |
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AVFilterContext *ctx = inlink->dst; |
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AVFilterLink *outlink = ctx->outputs[0]; |
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BPNContext *s = ctx->priv; |
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const int mask = (1 << (s->bitplane - 1)); |
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const int factor = (1 << s->depth) - 1; |
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float stats[4] = { 0 }; |
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char metabuf[128]; |
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int plane, y, x, bit; |
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AVFrame *out = s->filter ? NULL : in; |
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if (!out) { |
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
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if (!out) { |
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av_frame_free(&in); |
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return AVERROR(ENOMEM); |
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} |
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av_frame_copy_props(out, in); |
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} |
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if (s->depth <= 8) { |
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for (plane = 0; plane < s->nb_planes; plane++) { |
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const int linesize = in->linesize[plane]; |
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const int dlinesize = out->linesize[plane]; |
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uint8_t *val = in->data[plane]; |
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uint8_t *dst = s->filter ? out->data[plane]: NULL; |
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for (y = 0; y < s->planeheight[plane] - 1; y++) { |
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CHECK_BIT(0, 1, 1 + linesize, linesize) |
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for (x = 1; x < s->planewidth[plane] - 1; x++) { |
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CHECK_BIT(x, -1, 1, linesize) |
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} |
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CHECK_BIT(x, -1, -1 + linesize, linesize) |
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val += linesize; |
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if (dst) |
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dst += dlinesize; |
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} |
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CHECK_BIT(0, 1, 1 - linesize, -linesize) |
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for (x = 1; x < s->planewidth[plane] - 1; x++) { |
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CHECK_BIT(x, -1, 1, -linesize) |
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} |
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CHECK_BIT(x, -1, -1 - linesize, -linesize) |
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} |
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} else { |
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for (plane = 0; plane < s->nb_planes; plane++) { |
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const int linesize = in->linesize[plane] / 2; |
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const int dlinesize = out->linesize[plane] / 2; |
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uint16_t *val = (uint16_t *)in->data[plane]; |
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uint16_t *dst = s->filter ? (uint16_t *)out->data[plane] : NULL; |
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val = (uint16_t *)in->data[plane]; |
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for (y = 0; y < s->planeheight[plane] - 1; y++) { |
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CHECK_BIT(0, 1, 1 + linesize, linesize) |
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for (x = 1; x < s->planewidth[plane] - 1; x++) { |
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CHECK_BIT(x, -1, 1, linesize) |
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} |
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CHECK_BIT(x, -1, -1 + linesize, linesize) |
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val += linesize; |
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if (dst) |
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dst += dlinesize; |
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} |
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CHECK_BIT(0, 1, 1 - linesize, -linesize) |
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for (x = 1; x < s->planewidth[plane] - 1; x++) { |
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CHECK_BIT(x, -1, 1, -linesize) |
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} |
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CHECK_BIT(x, -1, -1 -linesize, -linesize) |
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} |
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} |
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for (plane = 0; plane < s->nb_planes; plane++) { |
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char key[32]; |
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stats[plane] /= s->planewidth[plane] * s->planeheight[plane]; |
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snprintf(key, sizeof(key), "lavfi.bitplanenoise.%d.%d", plane, s->bitplane); |
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snprintf(metabuf, sizeof(metabuf), "%f", 1. - 2.* fabsf((stats[plane] - 0.5))); |
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av_dict_set(&out->metadata, key, metabuf, 0); |
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} |
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if (out != in) |
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av_frame_free(&in); |
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return ff_filter_frame(outlink, out); |
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} |
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static const AVFilterPad 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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static const AVFilterPad outputs[] = { |
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{ |
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.name = "default", |
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.type = AVMEDIA_TYPE_VIDEO, |
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}, |
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{ NULL } |
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}; |
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AVFilter ff_vf_bitplanenoise = { |
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.name = "bitplanenoise", |
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.description = NULL_IF_CONFIG_SMALL("Measure bit plane noise."), |
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.priv_size = sizeof(BPNContext), |
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.query_formats = query_formats, |
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.inputs = inputs, |
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.outputs = outputs, |
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.priv_class = &bitplanenoise_class, |
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, |
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}; |
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