328 lines
17 KiB
C
328 lines
17 KiB
C
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/*
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* Copyright (c) 2016 Paul B Mahol
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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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 "video.h"
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typedef struct AverageBlurContext {
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const AVClass *class;
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int radius;
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int radiusV;
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int planes;
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int depth;
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int planewidth[4];
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int planeheight[4];
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float *buffer;
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int nb_planes;
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int (*filter_horizontally)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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int (*filter_vertically)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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} AverageBlurContext;
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#define OFFSET(x) offsetof(AverageBlurContext, x)
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#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
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static const AVOption avgblur_options[] = {
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{ "sizeX", "set horizontal size", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=1}, 1, 1024, FLAGS },
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{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
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{ "sizeY", "set vertical size", OFFSET(radiusV), AV_OPT_TYPE_INT, {.i64=0}, 0, 1024, FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(avgblur);
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typedef struct ThreadData {
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int height;
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int width;
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uint8_t *ptr;
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int linesize;
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} ThreadData;
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#define HORIZONTAL_FILTER(name, type) \
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static int filter_horizontally_##name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)\
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{ \
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AverageBlurContext *s = ctx->priv; \
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ThreadData *td = arg; \
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const int height = td->height; \
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const int width = td->width; \
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const int slice_start = (height * jobnr ) / nb_jobs; \
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const int slice_end = (height * (jobnr+1)) / nb_jobs; \
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const int radius = FFMIN(s->radius, width / 2); \
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const int linesize = td->linesize / sizeof(type); \
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float *buffer = s->buffer; \
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const type *src; \
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float *ptr; \
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int y, x; \
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\
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/* Filter horizontally along each row */ \
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for (y = slice_start; y < slice_end; y++) { \
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float acc = 0; \
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int count = 0; \
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\
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src = (const type *)td->ptr + linesize * y; \
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ptr = buffer + width * y; \
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\
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for (x = 0; x < radius; x++) { \
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acc += src[x]; \
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} \
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count += radius; \
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\
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for (x = 0; x <= radius; x++) { \
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acc += src[x + radius]; \
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count++; \
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ptr[x] = acc / count; \
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} \
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\
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for (; x < width - radius; x++) { \
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acc += src[x + radius] - src[x - radius - 1]; \
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ptr[x] = acc / count; \
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} \
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\
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for (; x < width; x++) { \
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acc -= src[x - radius]; \
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count--; \
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ptr[x] = acc / count; \
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} \
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} \
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\
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return 0; \
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}
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HORIZONTAL_FILTER(8, uint8_t)
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HORIZONTAL_FILTER(16, uint16_t)
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#define VERTICAL_FILTER(name, type) \
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static int filter_vertically_##name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
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{ \
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AverageBlurContext *s = ctx->priv; \
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ThreadData *td = arg; \
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const int height = td->height; \
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const int width = td->width; \
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const int slice_start = (width * jobnr ) / nb_jobs; \
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const int slice_end = (width * (jobnr+1)) / nb_jobs; \
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const int radius = FFMIN(s->radiusV, height / 2); \
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const int linesize = td->linesize / sizeof(type); \
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type *buffer = (type *)td->ptr; \
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const float *src; \
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type *ptr; \
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int i, x; \
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\
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/* Filter vertically along each column */ \
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for (x = slice_start; x < slice_end; x++) { \
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float acc = 0; \
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int count = 0; \
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\
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src = s->buffer + x; \
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\
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for (i = 0; i < radius; i++) { \
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acc += src[0]; \
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src += width; \
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} \
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count += radius; \
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\
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src = s->buffer + x; \
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ptr = buffer + x; \
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for (i = 0; i + radius < height && i <= radius; i++) { \
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acc += src[(i + radius) * width]; \
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count++; \
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ptr[i * linesize] = acc / count; \
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} \
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\
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for (; i < height - radius; i++) { \
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acc += src[(i + radius) * width] - src[(i - radius - 1) * width]; \
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ptr[i * linesize] = acc / count; \
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} \
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\
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for (; i < height; i++) { \
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acc -= src[(i - radius) * width]; \
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count--; \
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ptr[i * linesize] = acc / count; \
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} \
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} \
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\
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return 0; \
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}
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VERTICAL_FILTER(8, uint8_t)
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VERTICAL_FILTER(16, uint16_t)
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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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AverageBlurContext *s = inlink->dst->priv;
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s->depth = desc->comp[0].depth;
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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->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->nb_planes = av_pix_fmt_count_planes(inlink->format);
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s->buffer = av_malloc_array(inlink->w, inlink->h * sizeof(*s->buffer));
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if (!s->buffer)
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return AVERROR(ENOMEM);
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if (s->radiusV <= 0) {
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s->radiusV = s->radius;
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}
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if (s->depth == 8) {
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s->filter_horizontally = filter_horizontally_8;
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s->filter_vertically = filter_vertically_8;
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} else {
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s->filter_horizontally = filter_horizontally_16;
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s->filter_vertically = filter_vertically_16;
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}
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return 0;
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}
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static void averageiir2d(AVFilterContext *ctx, AVFrame *in, AVFrame *out, int plane)
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{
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AverageBlurContext *s = ctx->priv;
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const int width = s->planewidth[plane];
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const int height = s->planeheight[plane];
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const int nb_threads = ff_filter_get_nb_threads(ctx);
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ThreadData td;
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td.width = width;
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td.height = height;
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td.ptr = in->data[plane];
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td.linesize = in->linesize[plane];
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ctx->internal->execute(ctx, s->filter_horizontally, &td, NULL, FFMIN(height, nb_threads));
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td.ptr = out->data[plane];
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td.linesize = out->linesize[plane];
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ctx->internal->execute(ctx, s->filter_vertically, &td, NULL, FFMIN(width, nb_threads));
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}
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static int query_formats(AVFilterContext *ctx)
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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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return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
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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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AverageBlurContext *s = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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AVFrame *out;
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int plane;
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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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for (plane = 0; plane < s->nb_planes; plane++) {
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const int height = s->planeheight[plane];
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const int width = s->planewidth[plane];
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if (!(s->planes & (1 << plane))) {
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if (out != in)
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av_image_copy_plane(out->data[plane], out->linesize[plane],
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in->data[plane], in->linesize[plane],
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width * ((s->depth + 7) / 8), height);
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continue;
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}
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averageiir2d(ctx, in, out, plane);
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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 av_cold void uninit(AVFilterContext *ctx)
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{
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AverageBlurContext *s = ctx->priv;
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av_freep(&s->buffer);
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}
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static const AVFilterPad avgblur_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.config_props = config_input,
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.filter_frame = filter_frame,
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},
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{ NULL }
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};
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static const AVFilterPad avgblur_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_avgblur = {
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.name = "avgblur",
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.description = NULL_IF_CONFIG_SMALL("Apply Average Blur filter."),
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.priv_size = sizeof(AverageBlurContext),
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.priv_class = &avgblur_class,
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.uninit = uninit,
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.query_formats = query_formats,
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.inputs = avgblur_inputs,
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.outputs = avgblur_outputs,
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
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.process_command = ff_filter_process_command,
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};
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