| /* |
| * Copyright (c) 2022 Paul B Mahol |
| * |
| * 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/internal.h" |
| #include "libavutil/imgutils.h" |
| #include "libavutil/opt.h" |
| |
| #include "avfilter.h" |
| #include "internal.h" |
| #include "video.h" |
| |
| enum PixelizeModes { |
| PIXELIZE_AVG, |
| PIXELIZE_MIN, |
| PIXELIZE_MAX, |
| PIXELIZE_MODES |
| }; |
| |
| typedef struct PixelizeContext { |
| const AVClass *class; |
| |
| int block_w[4], block_h[4]; |
| int mode; |
| |
| int depth; |
| int planes; |
| int nb_planes; |
| int linesize[4]; |
| int planewidth[4]; |
| int planeheight[4]; |
| |
| int log2_chroma_w; |
| int log2_chroma_h; |
| |
| int (*pixelize[PIXELIZE_MODES])(const uint8_t *src, uint8_t *dst, |
| ptrdiff_t src_linesize, |
| ptrdiff_t dst_linesize, |
| int w, int h); |
| } PixelizeContext; |
| |
| static const enum AVPixelFormat pix_fmts[] = { |
| AV_PIX_FMT_GRAY8, |
| AV_PIX_FMT_GRAY9, |
| AV_PIX_FMT_GRAY10, |
| AV_PIX_FMT_GRAY12, |
| AV_PIX_FMT_GRAY14, |
| AV_PIX_FMT_GRAY16, |
| 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_YUVJ420P, AV_PIX_FMT_YUVJ422P, |
| AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P, |
| AV_PIX_FMT_YUVJ411P, |
| 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_YUV440P10, |
| AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12, |
| AV_PIX_FMT_YUV440P12, |
| AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14, |
| AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, |
| AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, |
| AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16, |
| AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P, |
| 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_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16, |
| AV_PIX_FMT_NONE |
| }; |
| |
| typedef struct ThreadData { |
| AVFrame *in, *out; |
| } ThreadData; |
| |
| #define PIXELIZE_AVG(name, type, stype) \ |
| static int pixelize_avg##name(const uint8_t *ssrc, uint8_t *ddst, \ |
| ptrdiff_t src_linesize, ptrdiff_t dst_linesize, \ |
| int w, int h) \ |
| { \ |
| const type *src = (const type *)ssrc; \ |
| type *dst = (type *)ddst; \ |
| stype sum = 0; \ |
| type fill; \ |
| for (int y = 0; y < h; y++) { \ |
| for (int x = 0; x < w; x++) \ |
| sum += src[x]; \ |
| \ |
| src += src_linesize / sizeof(type); \ |
| } \ |
| \ |
| fill = sum / (w * h); \ |
| \ |
| for (int y = 0; y < h; y++) { \ |
| for (int x = 0; x < w; x++) \ |
| dst[x] = fill; \ |
| \ |
| dst += dst_linesize / sizeof(type); \ |
| } \ |
| \ |
| return 0; \ |
| } |
| |
| #define PIXELIZE_MIN(name, type, stype) \ |
| static int pixelize_min##name(const uint8_t *ssrc, uint8_t *ddst, \ |
| ptrdiff_t src_linesize, ptrdiff_t dst_linesize, \ |
| int w, int h) \ |
| { \ |
| const type *src = (const type *)ssrc; \ |
| type *dst = (type *)ddst; \ |
| type fill = src[0]; \ |
| \ |
| for (int y = 0; y < h; y++) { \ |
| for (int x = 0; x < w; x++) \ |
| fill = FFMIN(src[x], fill); \ |
| \ |
| src += src_linesize / sizeof(type); \ |
| } \ |
| \ |
| for (int y = 0; y < h; y++) { \ |
| for (int x = 0; x < w; x++) \ |
| dst[x] = fill; \ |
| \ |
| dst += dst_linesize / sizeof(type); \ |
| } \ |
| \ |
| return 0; \ |
| } |
| |
| #define PIXELIZE_MAX(name, type, stype) \ |
| static int pixelize_max##name(const uint8_t *ssrc, uint8_t *ddst, \ |
| ptrdiff_t src_linesize, ptrdiff_t dst_linesize, \ |
| int w, int h) \ |
| { \ |
| const type *src = (const type *)ssrc; \ |
| type *dst = (type *)ddst; \ |
| type fill = src[0]; \ |
| \ |
| for (int y = 0; y < h; y++) { \ |
| for (int x = 0; x < w; x++) \ |
| fill = FFMAX(src[x], fill); \ |
| \ |
| src += src_linesize / sizeof(type); \ |
| } \ |
| \ |
| for (int y = 0; y < h; y++) { \ |
| for (int x = 0; x < w; x++) \ |
| dst[x] = fill; \ |
| \ |
| dst += dst_linesize / sizeof(type); \ |
| } \ |
| \ |
| return 0; \ |
| } |
| |
| PIXELIZE_AVG(8, uint8_t, unsigned) |
| PIXELIZE_AVG(16, uint16_t, uint64_t) |
| PIXELIZE_MIN(8, uint8_t, unsigned) |
| PIXELIZE_MIN(16, uint16_t, uint64_t) |
| PIXELIZE_MAX(8, uint8_t, unsigned) |
| PIXELIZE_MAX(16, uint16_t, uint64_t) |
| |
| static int pixelize_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
| { |
| PixelizeContext *s = ctx->priv; |
| const int mode = s->mode; |
| ThreadData *td = arg; |
| AVFrame *out = td->out; |
| AVFrame *in = td->in; |
| |
| for (int p = 0; p < s->nb_planes; p++) { |
| const int wh = s->planeheight[p]; |
| const int h = (s->planeheight[p] + s->block_h[p] - 1) / s->block_h[p]; |
| const int w = (s->planewidth[p] + s->block_w[p] - 1) / s->block_w[p]; |
| const int wslice_start = (wh * jobnr) / nb_jobs; |
| const int wslice_end = (wh * (jobnr+1)) / nb_jobs; |
| const int slice_start = (h * jobnr) / nb_jobs; |
| const int slice_end = (h * (jobnr+1)) / nb_jobs; |
| const ptrdiff_t out_linesize = out->linesize[p]; |
| const ptrdiff_t in_linesize = in->linesize[p]; |
| const uint8_t *src = in->data[p]; |
| uint8_t *dst = out->data[p]; |
| |
| if (!((1 << p) & s->planes)) { |
| av_image_copy_plane(dst + wslice_start * out_linesize, |
| out_linesize, |
| src + wslice_start * in_linesize, |
| in_linesize, |
| s->linesize[p], wslice_end - wslice_start); |
| continue; |
| } |
| |
| for (int y = slice_start; y < slice_end; y++) { |
| const int block_h = FFMIN(s->block_h[p], s->planeheight[p] - y * s->block_h[p]); |
| for (int x = 0; x < w; x++) { |
| const int block_w = FFMIN(s->block_w[p], s->planewidth[p] - x * s->block_w[p]); |
| |
| s->pixelize[mode](src + s->block_h[p] * y * in_linesize + |
| x * s->block_w[p] * (1 + (s->depth > 8)), |
| dst + s->block_h[p] * y * out_linesize + |
| x * s->block_w[p] * (1 + (s->depth > 8)), |
| in_linesize, out_linesize, block_w, block_h); |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int config_output(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| PixelizeContext *s = ctx->priv; |
| AVFilterLink *inlink = ctx->inputs[0]; |
| const AVPixFmtDescriptor *desc; |
| int ret; |
| |
| desc = av_pix_fmt_desc_get(outlink->format); |
| if (!desc) |
| return AVERROR_BUG; |
| s->nb_planes = av_pix_fmt_count_planes(outlink->format); |
| s->depth = desc->comp[0].depth; |
| |
| if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0) |
| return ret; |
| |
| s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w); |
| s->planewidth[0] = s->planewidth[3] = inlink->w; |
| |
| s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h); |
| s->planeheight[0] = s->planeheight[3] = inlink->h; |
| |
| s->log2_chroma_w = desc->log2_chroma_w; |
| s->log2_chroma_h = desc->log2_chroma_h; |
| |
| s->pixelize[PIXELIZE_AVG] = s->depth <= 8 ? pixelize_avg8 : pixelize_avg16; |
| s->pixelize[PIXELIZE_MIN] = s->depth <= 8 ? pixelize_min8 : pixelize_min16; |
| s->pixelize[PIXELIZE_MAX] = s->depth <= 8 ? pixelize_max8 : pixelize_max16; |
| |
| return 0; |
| } |
| |
| static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| PixelizeContext *s = ctx->priv; |
| ThreadData td; |
| AVFrame *out; |
| int ret; |
| |
| s->block_w[1] = s->block_w[2] = FFMAX(1, s->block_w[0] >> s->log2_chroma_w); |
| s->block_w[3] = s->block_w[0] = s->block_w[1] << s->log2_chroma_w; |
| |
| s->block_h[1] = s->block_h[2] = FFMAX(1, s->block_h[0] >> s->log2_chroma_h); |
| s->block_h[3] = s->block_h[0] = s->block_h[1] << s->log2_chroma_h; |
| |
| if (av_frame_is_writable(in)) { |
| out = in; |
| } else { |
| out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| ret = av_frame_copy_props(out, in); |
| if (ret < 0) { |
| av_frame_free(&out); |
| goto fail; |
| } |
| } |
| |
| td.out = out; |
| td.in = in; |
| ff_filter_execute(ctx, pixelize_slice, &td, NULL, |
| FFMIN((s->planeheight[1] + s->block_h[1] - 1) / s->block_h[1], |
| ff_filter_get_nb_threads(ctx))); |
| |
| if (out != in) |
| av_frame_free(&in); |
| return ff_filter_frame(outlink, out); |
| fail: |
| av_frame_free(&in); |
| return ret; |
| } |
| |
| #define OFFSET(x) offsetof(PixelizeContext, x) |
| #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_RUNTIME_PARAM) |
| |
| static const AVOption pixelize_options[] = { |
| { "width", "set block width", OFFSET(block_w[0]), AV_OPT_TYPE_INT, {.i64=16}, 1, 1024, FLAGS }, |
| { "w", "set block width", OFFSET(block_w[0]), AV_OPT_TYPE_INT, {.i64=16}, 1, 1024, FLAGS }, |
| { "height", "set block height", OFFSET(block_h[0]), AV_OPT_TYPE_INT, {.i64=16}, 1, 1024, FLAGS }, |
| { "h", "set block height", OFFSET(block_h[0]), AV_OPT_TYPE_INT, {.i64=16}, 1, 1024, FLAGS }, |
| { "mode", "set the pixelize mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, PIXELIZE_MODES-1, FLAGS, .unit = "mode" }, |
| { "m", "set the pixelize mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, PIXELIZE_MODES-1, FLAGS, .unit = "mode" }, |
| { "avg", "average", 0, AV_OPT_TYPE_CONST, {.i64=PIXELIZE_AVG}, 0, 0, FLAGS, .unit = "mode" }, |
| { "min", "minimum", 0, AV_OPT_TYPE_CONST, {.i64=PIXELIZE_MIN}, 0, 0, FLAGS, .unit = "mode" }, |
| { "max", "maximum", 0, AV_OPT_TYPE_CONST, {.i64=PIXELIZE_MAX}, 0, 0, FLAGS, .unit = "mode" }, |
| { "planes", "set what planes to filter", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=15}, 0, 15, FLAGS }, |
| { "p", "set what planes to filter", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=15}, 0, 15, FLAGS }, |
| { NULL }, |
| }; |
| |
| AVFILTER_DEFINE_CLASS(pixelize); |
| |
| static const AVFilterPad pixelize_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .filter_frame = filter_frame, |
| }, |
| }; |
| |
| static const AVFilterPad pixelize_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_output, |
| }, |
| }; |
| |
| const AVFilter ff_vf_pixelize = { |
| .name = "pixelize", |
| .description = NULL_IF_CONFIG_SMALL("Pixelize video."), |
| .priv_size = sizeof(PixelizeContext), |
| .priv_class = &pixelize_class, |
| FILTER_INPUTS(pixelize_inputs), |
| FILTER_OUTPUTS(pixelize_outputs), |
| FILTER_PIXFMTS_ARRAY(pix_fmts), |
| .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS, |
| .process_command = ff_filter_process_command, |
| }; |