| /* |
| * Copyright (c) 2016 Floris Sluiter |
| * |
| * 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 |
| */ |
| |
| /** |
| * @file |
| * Pixel remap filter |
| * This filter copies pixel by pixel a source frame to a target frame. |
| * It remaps the pixels to a new x,y destination based on two files ymap/xmap. |
| * Map files are passed as a parameter and are in PGM format (P2 or P5), |
| * where the values are y(rows)/x(cols) coordinates of the source_frame. |
| * The *target* frame dimension is based on mapfile dimensions: specified in the |
| * header of the mapfile and reflected in the number of datavalues. |
| * Dimensions of ymap and xmap must be equal. Datavalues must be positive or zero. |
| * Any datavalue in the ymap or xmap which value is higher |
| * then the *source* frame height or width is silently ignored, leaving a |
| * blank/chromakey pixel. This can safely be used as a feature to create overlays. |
| * |
| * Algorithm digest: |
| * Target_frame[y][x] = Source_frame[ ymap[y][x] ][ [xmap[y][x] ]; |
| */ |
| |
| #include "libavutil/imgutils.h" |
| #include "libavutil/pixdesc.h" |
| #include "libavutil/opt.h" |
| #include "avfilter.h" |
| #include "formats.h" |
| #include "framesync.h" |
| #include "internal.h" |
| #include "video.h" |
| |
| typedef struct RemapContext { |
| const AVClass *class; |
| int nb_planes; |
| int nb_components; |
| int step; |
| FFFrameSync fs; |
| |
| void (*remap)(struct RemapContext *s, const AVFrame *in, |
| const AVFrame *xin, const AVFrame *yin, |
| AVFrame *out); |
| } RemapContext; |
| |
| #define OFFSET(x) offsetof(RemapContext, x) |
| #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| |
| static const AVOption remap_options[] = { |
| { NULL } |
| }; |
| |
| AVFILTER_DEFINE_CLASS(remap); |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| static const enum AVPixelFormat pix_fmts[] = { |
| AV_PIX_FMT_YUVA444P, |
| AV_PIX_FMT_YUV444P, |
| AV_PIX_FMT_YUVJ444P, |
| AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, |
| AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA, |
| AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, |
| AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV444P12, |
| AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV444P16, |
| AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P16, |
| AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12, |
| AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16, |
| AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16, |
| AV_PIX_FMT_RGB48, AV_PIX_FMT_BGR48, |
| AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64, |
| AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, |
| AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, |
| AV_PIX_FMT_GRAY16, |
| AV_PIX_FMT_NONE |
| }; |
| static const enum AVPixelFormat map_fmts[] = { |
| AV_PIX_FMT_GRAY16, |
| AV_PIX_FMT_NONE |
| }; |
| AVFilterFormats *pix_formats = NULL, *map_formats = NULL; |
| int ret; |
| |
| if (!(pix_formats = ff_make_format_list(pix_fmts)) || |
| !(map_formats = ff_make_format_list(map_fmts))) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| if ((ret = ff_formats_ref(pix_formats, &ctx->inputs[0]->out_formats)) < 0 || |
| (ret = ff_formats_ref(map_formats, &ctx->inputs[1]->out_formats)) < 0 || |
| (ret = ff_formats_ref(map_formats, &ctx->inputs[2]->out_formats)) < 0 || |
| (ret = ff_formats_ref(pix_formats, &ctx->outputs[0]->in_formats)) < 0) |
| goto fail; |
| return 0; |
| fail: |
| if (pix_formats) |
| av_freep(&pix_formats->formats); |
| av_freep(&pix_formats); |
| if (map_formats) |
| av_freep(&map_formats->formats); |
| av_freep(&map_formats); |
| return ret; |
| } |
| |
| /** |
| * remap_planar algorithm expects planes of same size |
| * pixels are copied from source to target using : |
| * Target_frame[y][x] = Source_frame[ ymap[y][x] ][ [xmap[y][x] ]; |
| */ |
| static void remap_planar(RemapContext *s, const AVFrame *in, |
| const AVFrame *xin, const AVFrame *yin, |
| AVFrame *out) |
| { |
| const int xlinesize = xin->linesize[0] / 2; |
| const int ylinesize = yin->linesize[0] / 2; |
| int x , y, plane; |
| |
| for (plane = 0; plane < s->nb_planes ; plane++) { |
| uint8_t *dst = out->data[plane]; |
| const int dlinesize = out->linesize[plane]; |
| const uint8_t *src = in->data[plane]; |
| const int slinesize = in->linesize[plane]; |
| const uint16_t *xmap = (const uint16_t *)xin->data[0]; |
| const uint16_t *ymap = (const uint16_t *)yin->data[0]; |
| |
| for (y = 0; y < out->height; y++) { |
| for (x = 0; x < out->width; x++) { |
| if (ymap[x] < in->height && xmap[x] < in->width) { |
| dst[x] = src[ymap[x] * slinesize + xmap[x]]; |
| } else { |
| dst[x] = 0; |
| } |
| } |
| dst += dlinesize; |
| xmap += xlinesize; |
| ymap += ylinesize; |
| } |
| } |
| } |
| |
| static void remap_planar16(RemapContext *s, const AVFrame *in, |
| const AVFrame *xin, const AVFrame *yin, |
| AVFrame *out) |
| { |
| const int xlinesize = xin->linesize[0] / 2; |
| const int ylinesize = yin->linesize[0] / 2; |
| int x , y, plane; |
| |
| for (plane = 0; plane < s->nb_planes ; plane++) { |
| uint16_t *dst = (uint16_t *)out->data[plane]; |
| const int dlinesize = out->linesize[plane] / 2; |
| const uint16_t *src = (const uint16_t *)in->data[plane]; |
| const int slinesize = in->linesize[plane] / 2; |
| const uint16_t *xmap = (const uint16_t *)xin->data[0]; |
| const uint16_t *ymap = (const uint16_t *)yin->data[0]; |
| |
| for (y = 0; y < out->height; y++) { |
| for (x = 0; x < out->width; x++) { |
| if (ymap[x] < in->height && xmap[x] < in->width) { |
| dst[x] = src[ymap[x] * slinesize + xmap[x]]; |
| } else { |
| dst[x] = 0; |
| } |
| } |
| dst += dlinesize; |
| xmap += xlinesize; |
| ymap += ylinesize; |
| } |
| } |
| } |
| |
| /** |
| * remap_packed algorithm expects pixels with both padded bits (step) and |
| * number of components correctly set. |
| * pixels are copied from source to target using : |
| * Target_frame[y][x] = Source_frame[ ymap[y][x] ][ [xmap[y][x] ]; |
| */ |
| static void remap_packed(RemapContext *s, const AVFrame *in, |
| const AVFrame *xin, const AVFrame *yin, |
| AVFrame *out) |
| { |
| uint8_t *dst = out->data[0]; |
| const uint8_t *src = in->data[0]; |
| const int dlinesize = out->linesize[0]; |
| const int slinesize = in->linesize[0]; |
| const int xlinesize = xin->linesize[0] / 2; |
| const int ylinesize = yin->linesize[0] / 2; |
| const uint16_t *xmap = (const uint16_t *)xin->data[0]; |
| const uint16_t *ymap = (const uint16_t *)yin->data[0]; |
| const int step = s->step; |
| int c, x, y; |
| |
| for (y = 0; y < out->height; y++) { |
| for (x = 0; x < out->width; x++) { |
| for (c = 0; c < s->nb_components; c++) { |
| if (ymap[x] < in->height && xmap[x] < in->width) { |
| dst[x * step + c] = src[ymap[x] * slinesize + xmap[x] * step + c]; |
| } else { |
| dst[x * step + c] = 0; |
| } |
| } |
| } |
| dst += dlinesize; |
| xmap += xlinesize; |
| ymap += ylinesize; |
| } |
| } |
| |
| static void remap_packed16(RemapContext *s, const AVFrame *in, |
| const AVFrame *xin, const AVFrame *yin, |
| AVFrame *out) |
| { |
| uint16_t *dst = (uint16_t *)out->data[0]; |
| const uint16_t *src = (const uint16_t *)in->data[0]; |
| const int dlinesize = out->linesize[0] / 2; |
| const int slinesize = in->linesize[0] / 2; |
| const int xlinesize = xin->linesize[0] / 2; |
| const int ylinesize = yin->linesize[0] / 2; |
| const uint16_t *xmap = (const uint16_t *)xin->data[0]; |
| const uint16_t *ymap = (const uint16_t *)yin->data[0]; |
| const int step = s->step / 2; |
| int c, x, y; |
| |
| for (y = 0; y < out->height; y++) { |
| for (x = 0; x < out->width; x++) { |
| for (c = 0; c < s->nb_components; c++) { |
| if (ymap[x] < in->height && xmap[x] < in->width) { |
| dst[x * step + c] = src[ymap[x] * slinesize + xmap[x] * step + c]; |
| } else { |
| dst[x * step + c] = 0; |
| } |
| } |
| } |
| dst += dlinesize; |
| xmap += xlinesize; |
| ymap += ylinesize; |
| } |
| } |
| |
| static int config_input(AVFilterLink *inlink) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| RemapContext *s = ctx->priv; |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
| |
| s->nb_planes = av_pix_fmt_count_planes(inlink->format); |
| s->nb_components = desc->nb_components; |
| |
| if (desc->comp[0].depth == 8) { |
| if (s->nb_planes > 1 || s->nb_components == 1) { |
| s->remap = remap_planar; |
| } else { |
| s->remap = remap_packed; |
| } |
| } else { |
| if (s->nb_planes > 1 || s->nb_components == 1) { |
| s->remap = remap_planar16; |
| } else { |
| s->remap = remap_packed16; |
| } |
| } |
| |
| s->step = av_get_padded_bits_per_pixel(desc) >> 3; |
| return 0; |
| } |
| |
| static int process_frame(FFFrameSync *fs) |
| { |
| AVFilterContext *ctx = fs->parent; |
| RemapContext *s = fs->opaque; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| AVFrame *out, *in, *xpic, *ypic; |
| int ret; |
| |
| if ((ret = ff_framesync_get_frame(&s->fs, 0, &in, 0)) < 0 || |
| (ret = ff_framesync_get_frame(&s->fs, 1, &xpic, 0)) < 0 || |
| (ret = ff_framesync_get_frame(&s->fs, 2, &ypic, 0)) < 0) |
| return ret; |
| |
| if (ctx->is_disabled) { |
| out = av_frame_clone(in); |
| if (!out) |
| return AVERROR(ENOMEM); |
| } else { |
| out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) |
| return AVERROR(ENOMEM); |
| av_frame_copy_props(out, in); |
| |
| s->remap(s, in, xpic, ypic, out); |
| } |
| out->pts = av_rescale_q(in->pts, s->fs.time_base, outlink->time_base); |
| |
| return ff_filter_frame(outlink, out); |
| } |
| |
| static int config_output(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| RemapContext *s = ctx->priv; |
| AVFilterLink *srclink = ctx->inputs[0]; |
| AVFilterLink *xlink = ctx->inputs[1]; |
| AVFilterLink *ylink = ctx->inputs[2]; |
| FFFrameSyncIn *in; |
| int ret; |
| |
| if (xlink->w != ylink->w || xlink->h != ylink->h) { |
| av_log(ctx, AV_LOG_ERROR, "Second input link %s parameters " |
| "(size %dx%d) do not match the corresponding " |
| "third input link %s parameters (%dx%d)\n", |
| ctx->input_pads[1].name, xlink->w, xlink->h, |
| ctx->input_pads[2].name, ylink->w, ylink->h); |
| return AVERROR(EINVAL); |
| } |
| |
| outlink->w = xlink->w; |
| outlink->h = xlink->h; |
| outlink->time_base = srclink->time_base; |
| outlink->sample_aspect_ratio = srclink->sample_aspect_ratio; |
| outlink->frame_rate = srclink->frame_rate; |
| |
| ret = ff_framesync_init(&s->fs, ctx, 3); |
| if (ret < 0) |
| return ret; |
| |
| in = s->fs.in; |
| in[0].time_base = srclink->time_base; |
| in[1].time_base = xlink->time_base; |
| in[2].time_base = ylink->time_base; |
| in[0].sync = 2; |
| in[0].before = EXT_STOP; |
| in[0].after = EXT_STOP; |
| in[1].sync = 1; |
| in[1].before = EXT_NULL; |
| in[1].after = EXT_INFINITY; |
| in[2].sync = 1; |
| in[2].before = EXT_NULL; |
| in[2].after = EXT_INFINITY; |
| s->fs.opaque = s; |
| s->fs.on_event = process_frame; |
| |
| return ff_framesync_configure(&s->fs); |
| } |
| |
| static int activate(AVFilterContext *ctx) |
| { |
| RemapContext *s = ctx->priv; |
| return ff_framesync_activate(&s->fs); |
| } |
| |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| RemapContext *s = ctx->priv; |
| |
| ff_framesync_uninit(&s->fs); |
| } |
| |
| static const AVFilterPad remap_inputs[] = { |
| { |
| .name = "source", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_input, |
| }, |
| { |
| .name = "xmap", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| { |
| .name = "ymap", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad remap_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_output, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vf_remap = { |
| .name = "remap", |
| .description = NULL_IF_CONFIG_SMALL("Remap pixels."), |
| .priv_size = sizeof(RemapContext), |
| .uninit = uninit, |
| .query_formats = query_formats, |
| .activate = activate, |
| .inputs = remap_inputs, |
| .outputs = remap_outputs, |
| .priv_class = &remap_class, |
| .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, |
| }; |