265 lines
8.1 KiB
C
265 lines
8.1 KiB
C
/*
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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/attributes.h"
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#include "libavutil/common.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 "formats.h"
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#include "internal.h"
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#include "limiter.h"
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#include "video.h"
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typedef struct ThreadData {
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AVFrame *in;
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AVFrame *out;
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} ThreadData;
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typedef struct LimiterContext {
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const AVClass *class;
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int min;
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int max;
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int planes;
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int nb_planes;
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int linesize[4];
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int width[4];
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int height[4];
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LimiterDSPContext dsp;
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} LimiterContext;
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#define OFFSET(x) offsetof(LimiterContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
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static const AVOption limiter_options[] = {
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{ "min", "set min value", OFFSET(min), AV_OPT_TYPE_INT, {.i64=0}, 0, 65535, .flags = FLAGS },
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{ "max", "set max value", OFFSET(max), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, .flags = FLAGS },
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{ "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, .flags = FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(limiter);
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static av_cold int init(AVFilterContext *ctx)
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{
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LimiterContext *s = ctx->priv;
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if (s->min > s->max)
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return AVERROR(EINVAL);
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return 0;
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}
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static const enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
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AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
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AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
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AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
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AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
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AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
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AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
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AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
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AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
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AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
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AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
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AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
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AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
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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_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
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AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
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AV_PIX_FMT_NONE
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};
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static void limiter8(const uint8_t *src, uint8_t *dst,
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ptrdiff_t slinesize, ptrdiff_t dlinesize,
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int w, int h, int min, int max)
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{
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int x, y;
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for (y = 0; y < h; y++) {
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for (x = 0; x < w; x++) {
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dst[x] = av_clip(src[x], min, max);
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}
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dst += dlinesize;
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src += slinesize;
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}
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}
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static void limiter16(const uint8_t *ssrc, uint8_t *ddst,
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ptrdiff_t slinesize, ptrdiff_t dlinesize,
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int w, int h, int min, int max)
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{
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const uint16_t *src = (const uint16_t *)ssrc;
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uint16_t *dst = (uint16_t *)ddst;
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int x, y;
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dlinesize /= 2;
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slinesize /= 2;
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for (y = 0; y < h; y++) {
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for (x = 0; x < w; x++) {
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dst[x] = av_clip(src[x], min, max);
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}
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dst += dlinesize;
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src += slinesize;
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}
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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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LimiterContext *s = ctx->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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int depth, vsub, hsub, ret;
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s->nb_planes = av_pix_fmt_count_planes(inlink->format);
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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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depth = desc->comp[0].depth;
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hsub = desc->log2_chroma_w;
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vsub = desc->log2_chroma_h;
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s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
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s->height[0] = s->height[3] = inlink->h;
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s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
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s->width[0] = s->width[3] = inlink->w;
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s->max = FFMIN(s->max, (1 << depth) - 1);
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s->min = FFMIN(s->min, (1 << depth) - 1);
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if (depth == 8) {
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s->dsp.limiter = limiter8;
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} else {
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s->dsp.limiter = limiter16;
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}
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if (ARCH_X86)
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ff_limiter_init_x86(&s->dsp, desc->comp[0].depth);
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return 0;
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}
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static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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LimiterContext *s = ctx->priv;
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ThreadData *td = arg;
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AVFrame *in = td->in;
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AVFrame *out = td->out;
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int p;
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for (p = 0; p < s->nb_planes; p++) {
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const int h = s->height[p];
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const int slice_start = (h * jobnr) / nb_jobs;
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const int slice_end = (h * (jobnr+1)) / nb_jobs;
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if (!((1 << p) & s->planes)) {
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if (out != in)
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av_image_copy_plane(out->data[p] + slice_start * out->linesize[p],
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out->linesize[p],
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in->data[p] + slice_start * in->linesize[p],
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in->linesize[p],
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s->linesize[p], slice_end - slice_start);
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continue;
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}
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s->dsp.limiter(in->data[p] + slice_start * in->linesize[p],
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out->data[p] + slice_start * out->linesize[p],
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in->linesize[p], out->linesize[p],
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s->width[p], slice_end - slice_start,
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s->min, s->max);
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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 *in)
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{
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AVFilterContext *ctx = inlink->dst;
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LimiterContext *s = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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ThreadData td;
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AVFrame *out;
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if (av_frame_is_writable(in)) {
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out = in;
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} else {
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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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td.out = out;
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td.in = in;
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ff_filter_execute(ctx, filter_slice, &td, NULL,
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FFMIN(s->height[2], ff_filter_get_nb_threads(ctx)));
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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 int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
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char *res, int res_len, int flags)
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{
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int ret;
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ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
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if (ret < 0)
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return ret;
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return config_input(ctx->inputs[0]);
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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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};
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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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};
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const AVFilter ff_vf_limiter = {
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.name = "limiter",
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.description = NULL_IF_CONFIG_SMALL("Limit pixels components to the specified range."),
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.priv_size = sizeof(LimiterContext),
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.priv_class = &limiter_class,
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.init = init,
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FILTER_INPUTS(inputs),
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FILTER_OUTPUTS(outputs),
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FILTER_PIXFMTS_ARRAY(pix_fmts),
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
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.process_command = process_command,
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};
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