| /* |
| * Copyright (c) 2015 Niklas Haas |
| * Copyright (c) 2015 Paul B Mahol |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #include "libavutil/opt.h" |
| #include "libavutil/pixdesc.h" |
| #include "avfilter.h" |
| #include "internal.h" |
| #include "video.h" |
| |
| typedef struct DebandContext { |
| const AVClass *class; |
| |
| int coupling; |
| float threshold[4]; |
| int range; |
| int blur; |
| float direction; |
| |
| int nb_components; |
| int planewidth[4]; |
| int planeheight[4]; |
| int shift[2]; |
| int thr[4]; |
| |
| int *x_pos; |
| int *y_pos; |
| |
| int (*deband)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs); |
| } DebandContext; |
| |
| #define OFFSET(x) offsetof(DebandContext, x) |
| #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| |
| static const AVOption deband_options[] = { |
| { "1thr", "set 1st plane threshold", OFFSET(threshold[0]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0.00003, 0.5, FLAGS }, |
| { "2thr", "set 2nd plane threshold", OFFSET(threshold[1]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0.00003, 0.5, FLAGS }, |
| { "3thr", "set 3rd plane threshold", OFFSET(threshold[2]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0.00003, 0.5, FLAGS }, |
| { "4thr", "set 4th plane threshold", OFFSET(threshold[3]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0.00003, 0.5, FLAGS }, |
| { "range", "set range", OFFSET(range), AV_OPT_TYPE_INT, {.i64=16}, INT_MIN, INT_MAX, FLAGS }, |
| { "r", "set range", OFFSET(range), AV_OPT_TYPE_INT, {.i64=16}, INT_MIN, INT_MAX, FLAGS }, |
| { "direction", "set direction", OFFSET(direction), AV_OPT_TYPE_FLOAT, {.dbl=2*M_PI},-2*M_PI, 2*M_PI, FLAGS }, |
| { "d", "set direction", OFFSET(direction), AV_OPT_TYPE_FLOAT, {.dbl=2*M_PI},-2*M_PI, 2*M_PI, FLAGS }, |
| { "blur", "set blur", OFFSET(blur), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS }, |
| { "b", "set blur", OFFSET(blur), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS }, |
| { "coupling", "set plane coupling", OFFSET(coupling), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS }, |
| { "c", "set plane coupling", OFFSET(coupling), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS }, |
| { NULL } |
| }; |
| |
| AVFILTER_DEFINE_CLASS(deband); |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| DebandContext *s = ctx->priv; |
| |
| static const enum AVPixelFormat pix_fmts[] = { |
| AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16, |
| AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, |
| AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P, |
| AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, |
| AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ440P, |
| AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P, |
| AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, |
| AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, |
| AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, |
| 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_GBRP, AV_PIX_FMT_GBRAP, |
| AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, |
| AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, |
| AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, |
| AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, |
| AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16, |
| AV_PIX_FMT_NONE |
| }; |
| |
| static const enum AVPixelFormat cpix_fmts[] = { |
| AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P, |
| AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P9, |
| AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, |
| AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV444P14, |
| AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUVA444P16, |
| AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, |
| AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, |
| AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, |
| AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, |
| AV_PIX_FMT_NONE |
| }; |
| |
| AVFilterFormats *fmts_list = ff_make_format_list(s->coupling ? cpix_fmts : pix_fmts); |
| if (!fmts_list) |
| return AVERROR(ENOMEM); |
| |
| return ff_set_common_formats(ctx, fmts_list); |
| } |
| |
| static float frand(int x, int y) |
| { |
| const float r = sinf(x * 12.9898 + y * 78.233) * 43758.545; |
| |
| return r - floorf(r); |
| } |
| |
| static int inline get_avg(int ref0, int ref1, int ref2, int ref3) |
| { |
| return (ref0 + ref1 + ref2 + ref3) / 4; |
| } |
| |
| typedef struct ThreadData { |
| AVFrame *in, *out; |
| } ThreadData; |
| |
| static int deband_8_c(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
| { |
| DebandContext *s = ctx->priv; |
| ThreadData *td = arg; |
| AVFrame *in = td->in; |
| AVFrame *out = td->out; |
| int x, y, p; |
| |
| for (p = 0; p < s->nb_components; p++) { |
| const uint8_t *src_ptr = (const uint8_t *)in->data[p]; |
| uint8_t *dst_ptr = (uint8_t *)out->data[p]; |
| const int dst_linesize = out->linesize[p]; |
| const int src_linesize = in->linesize[p]; |
| const int thr = s->thr[p]; |
| const int start = (s->planeheight[p] * jobnr ) / nb_jobs; |
| const int end = (s->planeheight[p] * (jobnr+1)) / nb_jobs; |
| const int w = s->planewidth[p] - 1; |
| const int h = s->planeheight[p] - 1; |
| |
| for (y = start; y < end; y++) { |
| const int pos = y * s->planewidth[0]; |
| |
| for (x = 0; x < s->planewidth[p]; x++) { |
| const int x_pos = s->x_pos[pos + x]; |
| const int y_pos = s->y_pos[pos + x]; |
| const int ref0 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)]; |
| const int ref1 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)]; |
| const int ref2 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)]; |
| const int ref3 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)]; |
| const int src0 = src_ptr[y * src_linesize + x]; |
| |
| if (s->blur) { |
| const int avg = get_avg(ref0, ref1, ref2, ref3); |
| const int diff = FFABS(src0 - avg); |
| |
| dst_ptr[y * dst_linesize + x] = diff < thr ? avg : src0; |
| } else { |
| dst_ptr[y * dst_linesize + x] = (FFABS(src0 - ref0) < thr) && |
| (FFABS(src0 - ref1) < thr) && |
| (FFABS(src0 - ref2) < thr) && |
| (FFABS(src0 - ref3) < thr) ? get_avg(ref0, ref1, ref2, ref3) : src0; |
| } |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int deband_8_coupling_c(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
| { |
| DebandContext *s = ctx->priv; |
| ThreadData *td = arg; |
| AVFrame *in = td->in; |
| AVFrame *out = td->out; |
| const int start = (s->planeheight[0] * jobnr ) / nb_jobs; |
| const int end = (s->planeheight[0] * (jobnr+1)) / nb_jobs; |
| int x, y, p; |
| |
| for (y = start; y < end; y++) { |
| const int pos = y * s->planewidth[0]; |
| |
| for (x = 0; x < s->planewidth[0]; x++) { |
| const int x_pos = s->x_pos[pos + x]; |
| const int y_pos = s->y_pos[pos + x]; |
| int avg[4], cmp[4] = { 0 }, src[4]; |
| |
| for (p = 0; p < s->nb_components; p++) { |
| const uint8_t *src_ptr = (const uint8_t *)in->data[p]; |
| const int src_linesize = in->linesize[p]; |
| const int thr = s->thr[p]; |
| const int w = s->planewidth[p] - 1; |
| const int h = s->planeheight[p] - 1; |
| const int ref0 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)]; |
| const int ref1 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)]; |
| const int ref2 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)]; |
| const int ref3 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)]; |
| const int src0 = src_ptr[y * src_linesize + x]; |
| |
| src[p] = src0; |
| avg[p] = get_avg(ref0, ref1, ref2, ref3); |
| |
| if (s->blur) { |
| cmp[p] = FFABS(src0 - avg[p]) < thr; |
| } else { |
| cmp[p] = (FFABS(src0 - ref0) < thr) && |
| (FFABS(src0 - ref1) < thr) && |
| (FFABS(src0 - ref2) < thr) && |
| (FFABS(src0 - ref3) < thr); |
| } |
| } |
| |
| for (p = 0; p < s->nb_components; p++) |
| if (!cmp[p]) |
| break; |
| if (p == s->nb_components) { |
| for (p = 0; p < s->nb_components; p++) { |
| const int dst_linesize = out->linesize[p]; |
| |
| out->data[p][y * dst_linesize + x] = avg[p]; |
| } |
| } else { |
| for (p = 0; p < s->nb_components; p++) { |
| const int dst_linesize = out->linesize[p]; |
| |
| out->data[p][y * dst_linesize + x] = src[p]; |
| } |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int deband_16_coupling_c(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
| { |
| DebandContext *s = ctx->priv; |
| ThreadData *td = arg; |
| AVFrame *in = td->in; |
| AVFrame *out = td->out; |
| const int start = (s->planeheight[0] * jobnr ) / nb_jobs; |
| const int end = (s->planeheight[0] * (jobnr+1)) / nb_jobs; |
| int x, y, p, z; |
| |
| for (y = start; y < end; y++) { |
| const int pos = y * s->planewidth[0]; |
| |
| for (x = 0; x < s->planewidth[0]; x++) { |
| const int x_pos = s->x_pos[pos + x]; |
| const int y_pos = s->y_pos[pos + x]; |
| int avg[4], cmp[4] = { 0 }, src[4]; |
| |
| for (p = 0; p < s->nb_components; p++) { |
| const uint16_t *src_ptr = (const uint16_t *)in->data[p]; |
| const int src_linesize = in->linesize[p] / 2; |
| const int thr = s->thr[p]; |
| const int w = s->planewidth[p] - 1; |
| const int h = s->planeheight[p] - 1; |
| const int ref0 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)]; |
| const int ref1 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)]; |
| const int ref2 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)]; |
| const int ref3 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)]; |
| const int src0 = src_ptr[y * src_linesize + x]; |
| |
| src[p] = src0; |
| avg[p] = get_avg(ref0, ref1, ref2, ref3); |
| |
| if (s->blur) { |
| cmp[p] = FFABS(src0 - avg[p]) < thr; |
| } else { |
| cmp[p] = (FFABS(src0 - ref0) < thr) && |
| (FFABS(src0 - ref1) < thr) && |
| (FFABS(src0 - ref2) < thr) && |
| (FFABS(src0 - ref3) < thr); |
| } |
| } |
| |
| for (z = 0; z < s->nb_components; z++) |
| if (!cmp[z]) |
| break; |
| if (z == s->nb_components) { |
| for (p = 0; p < s->nb_components; p++) { |
| const int dst_linesize = out->linesize[p] / 2; |
| uint16_t *dst = (uint16_t *)out->data[p] + y * dst_linesize + x; |
| |
| dst[0] = avg[p]; |
| } |
| } else { |
| for (p = 0; p < s->nb_components; p++) { |
| const int dst_linesize = out->linesize[p] / 2; |
| uint16_t *dst = (uint16_t *)out->data[p] + y * dst_linesize + x; |
| |
| dst[0] = src[p]; |
| } |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int deband_16_c(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
| { |
| DebandContext *s = ctx->priv; |
| ThreadData *td = arg; |
| AVFrame *in = td->in; |
| AVFrame *out = td->out; |
| int x, y, p; |
| |
| for (p = 0; p < s->nb_components; p++) { |
| const uint16_t *src_ptr = (const uint16_t *)in->data[p]; |
| uint16_t *dst_ptr = (uint16_t *)out->data[p]; |
| const int dst_linesize = out->linesize[p] / 2; |
| const int src_linesize = in->linesize[p] / 2; |
| const int thr = s->thr[p]; |
| const int start = (s->planeheight[p] * jobnr ) / nb_jobs; |
| const int end = (s->planeheight[p] * (jobnr+1)) / nb_jobs; |
| const int w = s->planewidth[p] - 1; |
| const int h = s->planeheight[p] - 1; |
| |
| for (y = start; y < end; y++) { |
| const int pos = y * s->planewidth[0]; |
| |
| for (x = 0; x < s->planewidth[p]; x++) { |
| const int x_pos = s->x_pos[pos + x]; |
| const int y_pos = s->y_pos[pos + x]; |
| const int ref0 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)]; |
| const int ref1 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)]; |
| const int ref2 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)]; |
| const int ref3 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)]; |
| const int src0 = src_ptr[y * src_linesize + x]; |
| |
| if (s->blur) { |
| const int avg = get_avg(ref0, ref1, ref2, ref3); |
| const int diff = FFABS(src0 - avg); |
| |
| dst_ptr[y * dst_linesize + x] = diff < thr ? avg : src0; |
| } else { |
| dst_ptr[y * dst_linesize + x] = (FFABS(src0 - ref0) < thr) && |
| (FFABS(src0 - ref1) < thr) && |
| (FFABS(src0 - ref2) < thr) && |
| (FFABS(src0 - ref3) < thr) ? get_avg(ref0, ref1, ref2, ref3) : src0; |
| } |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int config_input(AVFilterLink *inlink) |
| { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
| AVFilterContext *ctx = inlink->dst; |
| DebandContext *s = ctx->priv; |
| const float direction = s->direction; |
| const int range = s->range; |
| int x, y; |
| |
| s->nb_components = desc->nb_components; |
| |
| 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; |
| s->shift[0] = desc->log2_chroma_w; |
| s->shift[1] = desc->log2_chroma_h; |
| |
| if (s->coupling) |
| s->deband = desc->comp[0].depth > 8 ? deband_16_coupling_c : deband_8_coupling_c; |
| else |
| s->deband = desc->comp[0].depth > 8 ? deband_16_c : deband_8_c; |
| |
| s->thr[0] = ((1 << desc->comp[0].depth) - 1) * s->threshold[0]; |
| s->thr[1] = ((1 << desc->comp[1].depth) - 1) * s->threshold[1]; |
| s->thr[2] = ((1 << desc->comp[2].depth) - 1) * s->threshold[2]; |
| s->thr[3] = ((1 << desc->comp[3].depth) - 1) * s->threshold[3]; |
| |
| s->x_pos = av_malloc(s->planewidth[0] * s->planeheight[0] * sizeof(*s->x_pos)); |
| s->y_pos = av_malloc(s->planewidth[0] * s->planeheight[0] * sizeof(*s->y_pos)); |
| if (!s->x_pos || !s->y_pos) |
| return AVERROR(ENOMEM); |
| |
| for (y = 0; y < s->planeheight[0]; y++) { |
| for (x = 0; x < s->planewidth[0]; x++) { |
| const float r = frand(x, y); |
| const float dir = direction < 0 ? -direction : r * direction; |
| const int dist = range < 0 ? -range : r * range; |
| |
| s->x_pos[y * s->planewidth[0] + x] = cosf(dir) * dist; |
| s->y_pos[y * s->planewidth[0] + x] = sinf(dir) * dist; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| DebandContext *s = ctx->priv; |
| AVFrame *out; |
| ThreadData td; |
| |
| out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) { |
| av_frame_free(&in); |
| return AVERROR(ENOMEM); |
| } |
| av_frame_copy_props(out, in); |
| |
| td.in = in; td.out = out; |
| ctx->internal->execute(ctx, s->deband, &td, NULL, FFMIN3(s->planeheight[1], |
| s->planeheight[2], |
| ff_filter_get_nb_threads(ctx))); |
| |
| av_frame_free(&in); |
| return ff_filter_frame(outlink, out); |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| DebandContext *s = ctx->priv; |
| |
| av_freep(&s->x_pos); |
| av_freep(&s->y_pos); |
| } |
| |
| static const AVFilterPad avfilter_vf_deband_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_input, |
| .filter_frame = filter_frame, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad avfilter_vf_deband_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vf_deband = { |
| .name = "deband", |
| .description = NULL_IF_CONFIG_SMALL("Debands video."), |
| .priv_size = sizeof(DebandContext), |
| .priv_class = &deband_class, |
| .uninit = uninit, |
| .query_formats = query_formats, |
| .inputs = avfilter_vf_deband_inputs, |
| .outputs = avfilter_vf_deband_outputs, |
| .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS, |
| }; |
