Signed-off-by: Paul B Mahol <one...@gmail.com> --- doc/filters.texi | 64 ++++++ libavfilter/Makefile | 1 + libavfilter/allfilters.c | 1 + libavfilter/vf_estdif.c | 469 +++++++++++++++++++++++++++++++++++++++ 4 files changed, 535 insertions(+) create mode 100644 libavfilter/vf_estdif.c
diff --git a/doc/filters.texi b/doc/filters.texi index 813e35c2f9..9fbc4de7d2 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -11065,6 +11065,70 @@ Flags to local 3x3 coordinates maps like this: This filter supports the all above options as @ref{commands}. +@section estdif + +Deinterlace the input video ("estdif" stands for "Edge Slope +Tracing Deinterlacing Filter"). + +Spatial only filter that uses edge slope tracing algorithm +to interpolate missing lines. +It accepts the following parameters: + +@table @option +@item mode +The interlacing mode to adopt. It accepts one of the following values: + +@table @option +@item frame +Output one frame for each frame. +@item field +Output one frame for each field. +@end table + +The default value is @code{field}. + +@item parity +The picture field parity assumed for the input interlaced video. It accepts one +of the following values: + +@table @option +@item ff +Assume the top field is first. +@item bff +Assume the bottom field is first. +@item auto +Enable automatic detection of field parity. +@end table + +The default value is @code{auto}. +If the interlacing is unknown or the decoder does not export this information, +top field first will be assumed. + +@item deint +Specify which frames to deinterlace. Accepts one of the following +values: + +@table @option +@item all +Deinterlace all frames. +@item interlaced +Only deinterlace frames marked as interlaced. +@end table + +The default value is @code{all}. + +@item rslope +Specify the search radius for edge slope tracing. Default value is 1. +Allowed range is from 1 to 15. + +@item redge +Specify the search radius for best edge matching. Default value is 2. +Allowed range is from 0 to 3. +@end table + +@subsection Commands +This filter supports same @ref{commands} as options. + @section extractplanes Extract color channel components from input video stream into diff --git a/libavfilter/Makefile b/libavfilter/Makefile index ad1046d526..44afa79963 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -252,6 +252,7 @@ OBJS-$(CONFIG_EQ_FILTER) += vf_eq.o OBJS-$(CONFIG_EROSION_FILTER) += vf_neighbor.o OBJS-$(CONFIG_EROSION_OPENCL_FILTER) += vf_neighbor_opencl.o opencl.o \ opencl/neighbor.o +OBJS-$(CONFIG_ESTDIF_FILTER) += vf_estdif.o OBJS-$(CONFIG_EXTRACTPLANES_FILTER) += vf_extractplanes.o OBJS-$(CONFIG_FADE_FILTER) += vf_fade.o OBJS-$(CONFIG_FFTDNOIZ_FILTER) += vf_fftdnoiz.o diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index ce317dfa1c..471844a603 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -237,6 +237,7 @@ extern AVFilter ff_vf_entropy; extern AVFilter ff_vf_eq; extern AVFilter ff_vf_erosion; extern AVFilter ff_vf_erosion_opencl; +extern AVFilter ff_vf_estdif; extern AVFilter ff_vf_extractplanes; extern AVFilter ff_vf_fade; extern AVFilter ff_vf_fftdnoiz; diff --git a/libavfilter/vf_estdif.c b/libavfilter/vf_estdif.c new file mode 100644 index 0000000000..5d83e66906 --- /dev/null +++ b/libavfilter/vf_estdif.c @@ -0,0 +1,469 @@ +/* + * 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/common.h" +#include "libavutil/imgutils.h" +#include "libavutil/opt.h" +#include "libavutil/pixdesc.h" +#include "avfilter.h" +#include "formats.h" +#include "internal.h" +#include "video.h" + +typedef struct ESTDIFContext { + const AVClass *class; + + int mode; ///< 0 is frame, 1 is field + int parity; ///< frame field parity + int deint; ///< which frames to deinterlace + int rslope; ///< best edge slope search radius + int redge; ///< best edge match search radius + int linesize[4]; ///< bytes of pixel data per line for each plane + int planewidth[4]; ///< width of each plane + int planeheight[4]; ///< height of each plane + int field; ///< which field are we on, 0 or 1 + int eof; + int nb_planes; + int nb_threads; + int64_t pts; + AVFrame *prev; + + void (*interpolate)(uint8_t *dst, + const uint8_t *prev_line, const uint8_t *next_line, + const uint8_t *prev2_line, const uint8_t *next2_line, + int x, int width, int rslope, int redge, + int *K); +} ESTDIFContext; + +#define MAX_R 15 +#define S (2 * MAX_R + 1) + +#define OFFSET(x) offsetof(ESTDIFContext, x) +#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM +#define CONST(name, help, val, unit) { name, help, 0, AV_OPT_TYPE_CONST, {.i64=val}, 0, 0, FLAGS, unit } + +static const AVOption estdif_options[] = { + { "mode", "specify the mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, "mode" }, + CONST("frame", NULL, 0, "mode"), + CONST("field", NULL, 1, "mode"), + { "parity", "specify the assumed picture field parity", OFFSET(parity), AV_OPT_TYPE_INT, {.i64=-1}, -1, 1, FLAGS, "parity" }, + CONST("tff", "assume top field first", 0, "parity"), + CONST("bff", "assume bottom field first", 1, "parity"), + CONST("auto", "auto detect parity", -1, "parity"), + { "deint", "specify which frames to deinterlace", OFFSET(deint), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "deint" }, + CONST("all", "deinterlace all frames", 0, "deint"), + CONST("interlaced", "only deinterlace frames marked as interlaced", 1, "deint"), + { "rslope", "specify the search radius for edge slope tracing", OFFSET(rslope), AV_OPT_TYPE_INT, {.i64=1}, 1, MAX_R, FLAGS, }, + { "redge", "specify the search radius for best edge matching", OFFSET(redge), AV_OPT_TYPE_INT, {.i64=2}, 0, 3, FLAGS, }, + { NULL } +}; + +AVFILTER_DEFINE_CLASS(estdif); + +static int query_formats(AVFilterContext *ctx) +{ + static const enum AVPixelFormat pix_fmts[] = { + AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P, + AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, + AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P, + AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, + AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, + AV_PIX_FMT_YUVJ411P, + AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P, + AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, + AV_PIX_FMT_GRAY8, + AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, + AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, + AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, + AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, + AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, + AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16, + AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16, + AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16, + AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16, + AV_PIX_FMT_NONE + }; + + AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); + if (!fmts_list) + return AVERROR(ENOMEM); + return ff_set_common_formats(ctx, fmts_list); +} + +static int config_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + AVFilterLink *inlink = ctx->inputs[0]; + + outlink->time_base.num = inlink->time_base.num; + outlink->time_base.den = inlink->time_base.den * 2; + outlink->frame_rate.num = inlink->frame_rate.num * 2; + outlink->frame_rate.den = inlink->frame_rate.den; + + return 0; +} + +typedef struct ThreadData { + AVFrame *out, *in; +} ThreadData; + +#define MIDL(type, ss) \ +static int midl_##ss(const type *prev, const type *next, \ + int end, int x, int k) \ +{ \ + return (prev[av_clip(x + k, 0, end)] + \ + next[av_clip(x - k, 0, end)] + 1) >> 1; \ +} + +MIDL(uint8_t, 8) +MIDL(uint16_t, 16) + +#define DIFF(type, ss) \ +static int diff_##ss(const type *prev, const type *next, \ + int end, int x, int k, int j) \ +{ \ + return abs(prev[av_clip(x + k + j, 0, end)] - \ + next[av_clip(x - k + j, 0, end)]); \ +} + +DIFF(uint8_t, 8) +DIFF(uint16_t, 16) + +#define COST(type, ss) \ +static int cost_##ss(const type *prev, const type *next, \ + int end, int x, int k) \ +{ \ + const int m = midl_##ss(prev, next, end, x, k); \ + const int p = prev[x]; \ + const int n = next[x]; \ + \ + return abs(p - m) + abs(n - m); \ +} + +COST(uint8_t, 8) +COST(uint16_t, 16) + +#define INTERPOLATE(type, ss) \ +static void interpolate_##ss(uint8_t *ddst, \ + const uint8_t *pprev_line, \ + const uint8_t *nnext_line, \ + const uint8_t *pprev2_line, \ + const uint8_t *nnext2_line, \ + int x, int width, int rslope, \ + int redge, \ + int *K) \ +{ \ + type *dst = (type *)ddst; \ + const type *prev_line = (const type *)pprev_line; \ + const type *prev2_line = (const type *)pprev2_line; \ + const type *next_line = (const type *)nnext_line; \ + const type *next2_line = (const type *)nnext2_line; \ + const int end = width - 1; \ + int k = *K; \ + int sd[S], sD[S], dmin = INT_MAX, di = 0; \ + \ + for (int i = -rslope; i <= rslope && abs(k) > rslope; i++) { \ + int sum = 0; \ + \ + for (int j = -redge; j <= redge; j++) { \ + sum += diff_##ss(prev_line, next_line, end, x, i, j) + \ + diff_##ss(prev2_line, prev_line, end, x, i, j) + \ + diff_##ss(next_line, next2_line, end, x, i, j); \ + } \ + \ + sD[i + rslope] = 1 * sum + \ + 4 * cost_##ss(prev_line, next_line, end, x, i) + \ + 128 * abs(i); \ + \ + dmin = FFMIN(sD[i + rslope], dmin); \ + } \ + \ + for (int i = -rslope; i <= rslope; i++) { \ + int sum = 0; \ + \ + for (int j = -redge; j <= redge; j++) { \ + sum += diff_##ss(prev_line, next_line, end, x, k + i, j) + \ + diff_##ss(prev2_line, prev_line, end, x, k + i, j) + \ + diff_##ss(next_line, next2_line, end, x, k + i, j); \ + } \ + \ + sd[i + rslope] = 1 * sum + \ + 4 * cost_##ss(prev_line, next_line, end, x, k + i) +\ + 128 * abs(k + i); \ + \ + dmin = FFMIN(sd[i + rslope], dmin); \ + } \ + \ + for (int i = -rslope; i <= rslope; i++) { \ + if (abs(k) > rslope) { \ + if (dmin == sD[i + rslope]) { \ + di = -k + i; \ + break; \ + } \ + } \ + if (dmin == sd[i + rslope]) { \ + di = i; \ + break; \ + } \ + } \ + \ + k += di; \ + \ + dst[x] = midl_##ss(prev_line, next_line, end, x, k); \ + \ + *K = k; \ +} + +INTERPOLATE(uint8_t, 8) +INTERPOLATE(uint16_t, 16) + +static int deinterlace_slice(AVFilterContext *ctx, void *arg, + int jobnr, int nb_jobs) +{ + ESTDIFContext *s = ctx->priv; + ThreadData *td = arg; + AVFrame *out = td->out; + AVFrame *in = td->in; + const int rslope = s->rslope; + const int redge = s->redge; + const int interlaced = in->interlaced_frame; + const int tff = (s->field == (s->parity == -1 ? + in->top_field_first == interlaced : + s->parity == 0 ? !interlaced : interlaced)); + + for (int plane = 0; plane < s->nb_planes; plane++) { + const uint8_t *src_data = in->data[plane]; + uint8_t *dst_data = out->data[plane]; + const int linesize = s->linesize[plane]; + const int width = s->planewidth[plane]; + const int height = s->planeheight[plane]; + const int src_linesize = in->linesize[plane]; + const int dst_linesize = out->linesize[plane]; + const int start = (height * jobnr) / nb_jobs; + const int end = (height * (jobnr+1)) / nb_jobs; + const uint8_t *prev_line, *prev2_line, *next_line, *next2_line, *in_line; + uint8_t *out_line; + int y_out; + + y_out = start + (tff ^ (start & 1)); + + in_line = src_data + (y_out * src_linesize); + out_line = dst_data + (y_out * dst_linesize); + + while (y_out < end) { + memcpy(out_line, in_line, linesize); + y_out += 2; + in_line += src_linesize * 2; + out_line += dst_linesize * 2; + } + + y_out = start + ((!tff) ^ (start & 1)); + out_line = dst_data + (y_out * dst_linesize); + + for (int y = y_out; y < end; y += 2) { + int y_prev2_in = y - 3; + int y_next2_in = y + 3; + int y_prev_in = y - 1; + int y_next_in = y + 1; + int k; + + while (y_prev2_in < 0) + y_prev2_in += 2; + + while (y_next2_in >= height) + y_next2_in -= 2; + + while (y_prev_in < 0) + y_prev_in += 2; + + while (y_next_in >= height) + y_next_in -= 2; + + prev2_line = src_data + (y_prev2_in * src_linesize); + next2_line = src_data + (y_next2_in * src_linesize); + + prev_line = src_data + (y_prev_in * src_linesize); + next_line = src_data + (y_next_in * src_linesize); + + k = 0; + + for (int x = 0; x < width; x++) { + s->interpolate(out_line, + prev_line, next_line, + prev2_line, next2_line, + x, width, rslope, redge, &k); + } + + out_line += 2 * dst_linesize; + } + } + + return 0; +} + +static int filter(AVFilterContext *ctx, int is_second, AVFrame *in) +{ + ESTDIFContext *s = ctx->priv; + AVFilterLink *outlink = ctx->outputs[0]; + AVFrame *out; + ThreadData td; + + out = ff_get_video_buffer(outlink, outlink->w, outlink->h); + if (!out) + return AVERROR(ENOMEM); + av_frame_copy_props(out, in); + out->interlaced_frame = 0; + out->pts = s->pts; + + td.out = out; td.in = in; + ctx->internal->execute(ctx, deinterlace_slice, &td, NULL, + FFMIN(s->planeheight[1] / 2, s->nb_threads)); + + if (s->mode) + s->field = !s->field; + + return ff_filter_frame(outlink, out); +} + +static int config_input(AVFilterLink *inlink) +{ + AVFilterContext *ctx = inlink->dst; + ESTDIFContext *s = ctx->priv; + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); + int ret, depth; + + if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0) + return ret; + + s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h); + s->planeheight[0] = s->planeheight[3] = inlink->h; + s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w); + s->planewidth[0] = s->planewidth[3] = inlink->w; + + if (inlink->h < 3) { + av_log(ctx, AV_LOG_ERROR, "Video of less than 3 lines is not supported\n"); + return AVERROR(EINVAL); + } + + s->nb_planes = av_pix_fmt_count_planes(inlink->format); + s->nb_threads = ff_filter_get_nb_threads(ctx); + depth = desc->comp[0].depth; + s->interpolate = depth <= 8 ? interpolate_8 : interpolate_16; + + return 0; +} + static int filter_frame(AVFilterLink *inlink, AVFrame *in) +{ + AVFilterContext *ctx = inlink->dst; + ESTDIFContext *s = ctx->priv; + int ret; + + if (!s->prev) { + s->prev = in; + return 0; + } + + if ((s->deint && !in->interlaced_frame) || ctx->is_disabled) { + s->prev->pts *= 2; + ret = ff_filter_frame(ctx->outputs[0], s->prev); + s->prev = in; + return ret; + } + + s->pts = s->prev->pts * 2; + ret = filter(ctx, 0, s->prev); + if (ret < 0 || s->mode == 0) { + av_frame_free(&s->prev); + s->prev = in; + return ret; + } + + s->pts = s->prev->pts + in->pts; + ret = filter(ctx, 1, s->prev); + av_frame_free(&s->prev); + s->prev = in; + return ret; +} + +static int request_frame(AVFilterLink *link) +{ + AVFilterContext *ctx = link->src; + ESTDIFContext *s = ctx->priv; + int ret; + + if (s->eof) + return AVERROR_EOF; + + ret = ff_request_frame(ctx->inputs[0]); + + if (ret == AVERROR_EOF && s->prev) { + AVFrame *next = av_frame_clone(s->prev); + + if (!next) + return AVERROR(ENOMEM); + + next->pts = s->prev->pts + av_rescale_q(1, av_inv_q(ctx->outputs[0]->frame_rate), + ctx->outputs[0]->time_base); + s->eof = 1; + ret = filter_frame(ctx->inputs[0], next); + } else if (ret < 0) { + return ret; + } + + return ret; +} + +static av_cold void uninit(AVFilterContext *ctx) +{ + ESTDIFContext *s = ctx->priv; + + av_frame_free(&s->prev); +} + +static const AVFilterPad estdif_inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .filter_frame = filter_frame, + .config_props = config_input, + }, + { NULL } +}; + +static const AVFilterPad estdif_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_output, + .request_frame = request_frame, + }, + { NULL } +}; + +AVFilter ff_vf_estdif = { + .name = "estdif", + .description = NULL_IF_CONFIG_SMALL("Apply Edge Slope Tracing deinterlace."), + .priv_size = sizeof(ESTDIFContext), + .priv_class = &estdif_class, + .uninit = uninit, + .query_formats = query_formats, + .inputs = estdif_inputs, + .outputs = estdif_outputs, + .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS, + .process_command = ff_filter_process_command, +}; -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".