| /* |
| * Copyright (c) 2013 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/avstring.h" |
| #include "libavutil/imgutils.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/pixdesc.h" |
| #include "avfilter.h" |
| #include "drawutils.h" |
| #include "internal.h" |
| |
| #define PLANE_R 0x01 |
| #define PLANE_G 0x02 |
| #define PLANE_B 0x04 |
| #define PLANE_A 0x08 |
| #define PLANE_Y 0x10 |
| #define PLANE_U 0x20 |
| #define PLANE_V 0x40 |
| |
| typedef struct { |
| const AVClass *class; |
| int requested_planes; |
| int map[4]; |
| int linesize[4]; |
| int is_packed; |
| int depth; |
| int step; |
| } ExtractPlanesContext; |
| |
| #define OFFSET(x) offsetof(ExtractPlanesContext, x) |
| #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| static const AVOption extractplanes_options[] = { |
| { "planes", "set planes", OFFSET(requested_planes), AV_OPT_TYPE_FLAGS, {.i64=1}, 1, 0xff, FLAGS, "flags"}, |
| { "y", "set luma plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_Y}, 0, 0, FLAGS, "flags"}, |
| { "u", "set u plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_U}, 0, 0, FLAGS, "flags"}, |
| { "v", "set v plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_V}, 0, 0, FLAGS, "flags"}, |
| { "r", "set red plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_R}, 0, 0, FLAGS, "flags"}, |
| { "g", "set green plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_G}, 0, 0, FLAGS, "flags"}, |
| { "b", "set blue plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_B}, 0, 0, FLAGS, "flags"}, |
| { "a", "set alpha plane", 0, AV_OPT_TYPE_CONST, {.i64=PLANE_A}, 0, 0, FLAGS, "flags"}, |
| { NULL } |
| }; |
| |
| AVFILTER_DEFINE_CLASS(extractplanes); |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| static const enum AVPixelFormat in_pixfmts[] = { |
| AV_PIX_FMT_YUV410P, |
| AV_PIX_FMT_YUV411P, |
| AV_PIX_FMT_YUV440P, |
| AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P, |
| AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA422P, |
| AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, |
| AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P, |
| AV_PIX_FMT_YUVJ411P, |
| AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, |
| AV_PIX_FMT_YUV420P16LE, AV_PIX_FMT_YUVA420P16LE, |
| AV_PIX_FMT_YUV420P16BE, AV_PIX_FMT_YUVA420P16BE, |
| AV_PIX_FMT_YUV422P16LE, AV_PIX_FMT_YUVA422P16LE, |
| AV_PIX_FMT_YUV422P16BE, AV_PIX_FMT_YUVA422P16BE, |
| AV_PIX_FMT_YUV444P16LE, AV_PIX_FMT_YUVA444P16LE, |
| AV_PIX_FMT_YUV444P16BE, AV_PIX_FMT_YUVA444P16BE, |
| AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A, |
| AV_PIX_FMT_YA16LE, AV_PIX_FMT_YA16BE, |
| AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_GRAY16BE, |
| AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, |
| AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA, |
| AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, |
| AV_PIX_FMT_RGB48LE, AV_PIX_FMT_BGR48LE, |
| AV_PIX_FMT_RGB48BE, AV_PIX_FMT_BGR48BE, |
| AV_PIX_FMT_RGBA64LE, AV_PIX_FMT_BGRA64LE, |
| AV_PIX_FMT_RGBA64BE, AV_PIX_FMT_BGRA64BE, |
| AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, |
| AV_PIX_FMT_GBRP16LE, AV_PIX_FMT_GBRP16BE, |
| AV_PIX_FMT_GBRAP16LE, AV_PIX_FMT_GBRAP16BE, |
| AV_PIX_FMT_NONE, |
| }; |
| static const enum AVPixelFormat out8_pixfmts[] = { AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE }; |
| static const enum AVPixelFormat out16le_pixfmts[] = { AV_PIX_FMT_GRAY16LE, AV_PIX_FMT_NONE }; |
| static const enum AVPixelFormat out16be_pixfmts[] = { AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_NONE }; |
| const enum AVPixelFormat *out_pixfmts; |
| const AVPixFmtDescriptor *desc; |
| AVFilterFormats *avff; |
| int i, ret, depth = 0, be = 0; |
| |
| if (!ctx->inputs[0]->in_formats || |
| !ctx->inputs[0]->in_formats->nb_formats) { |
| return AVERROR(EAGAIN); |
| } |
| |
| if (!ctx->inputs[0]->out_formats) |
| if ((ret = ff_formats_ref(ff_make_format_list(in_pixfmts), &ctx->inputs[0]->out_formats)) < 0) |
| return ret; |
| |
| avff = ctx->inputs[0]->in_formats; |
| desc = av_pix_fmt_desc_get(avff->formats[0]); |
| depth = desc->comp[0].depth; |
| be = desc->flags & AV_PIX_FMT_FLAG_BE; |
| for (i = 1; i < avff->nb_formats; i++) { |
| desc = av_pix_fmt_desc_get(avff->formats[i]); |
| if (depth != desc->comp[0].depth || |
| be != (desc->flags & AV_PIX_FMT_FLAG_BE)) { |
| return AVERROR(EAGAIN); |
| } |
| } |
| |
| if (depth == 8) |
| out_pixfmts = out8_pixfmts; |
| else if (be) |
| out_pixfmts = out16be_pixfmts; |
| else |
| out_pixfmts = out16le_pixfmts; |
| |
| for (i = 0; i < ctx->nb_outputs; i++) |
| if ((ret = ff_formats_ref(ff_make_format_list(out_pixfmts), &ctx->outputs[i]->in_formats)) < 0) |
| return ret; |
| return 0; |
| } |
| |
| static int config_input(AVFilterLink *inlink) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| ExtractPlanesContext *s = ctx->priv; |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
| int plane_avail, ret, i; |
| uint8_t rgba_map[4]; |
| |
| plane_avail = ((desc->flags & AV_PIX_FMT_FLAG_RGB) ? PLANE_R|PLANE_G|PLANE_B : |
| PLANE_Y | |
| ((desc->nb_components > 2) ? PLANE_U|PLANE_V : 0)) | |
| ((desc->flags & AV_PIX_FMT_FLAG_ALPHA) ? PLANE_A : 0); |
| if (s->requested_planes & ~plane_avail) { |
| av_log(ctx, AV_LOG_ERROR, "Requested planes not available.\n"); |
| return AVERROR(EINVAL); |
| } |
| if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0) |
| return ret; |
| |
| s->depth = desc->comp[0].depth >> 3; |
| s->step = av_get_padded_bits_per_pixel(desc) >> 3; |
| s->is_packed = !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) && |
| (desc->nb_components > 1); |
| if (desc->flags & AV_PIX_FMT_FLAG_RGB) { |
| ff_fill_rgba_map(rgba_map, inlink->format); |
| for (i = 0; i < 4; i++) |
| s->map[i] = rgba_map[s->map[i]]; |
| } |
| |
| return 0; |
| } |
| |
| static int config_output(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| AVFilterLink *inlink = ctx->inputs[0]; |
| ExtractPlanesContext *s = ctx->priv; |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
| const int output = outlink->srcpad - ctx->output_pads; |
| |
| if (s->map[output] == 1 || s->map[output] == 2) { |
| outlink->h = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h); |
| outlink->w = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w); |
| } |
| |
| return 0; |
| } |
| |
| static void extract_from_packed(uint8_t *dst, int dst_linesize, |
| const uint8_t *src, int src_linesize, |
| int width, int height, |
| int depth, int step, int comp) |
| { |
| int x, y; |
| |
| for (y = 0; y < height; y++) { |
| switch (depth) { |
| case 1: |
| for (x = 0; x < width; x++) |
| dst[x] = src[x * step + comp]; |
| break; |
| case 2: |
| for (x = 0; x < width; x++) { |
| dst[x * 2 ] = src[x * step + comp * 2 ]; |
| dst[x * 2 + 1] = src[x * step + comp * 2 + 1]; |
| } |
| break; |
| } |
| dst += dst_linesize; |
| src += src_linesize; |
| } |
| } |
| |
| static int filter_frame(AVFilterLink *inlink, AVFrame *frame) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| ExtractPlanesContext *s = ctx->priv; |
| int i, eof = 0, ret = 0; |
| |
| for (i = 0; i < ctx->nb_outputs; i++) { |
| AVFilterLink *outlink = ctx->outputs[i]; |
| const int idx = s->map[i]; |
| AVFrame *out; |
| |
| if (outlink->status) |
| continue; |
| |
| out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) { |
| ret = AVERROR(ENOMEM); |
| break; |
| } |
| av_frame_copy_props(out, frame); |
| |
| if (s->is_packed) { |
| extract_from_packed(out->data[0], out->linesize[0], |
| frame->data[0], frame->linesize[0], |
| outlink->w, outlink->h, |
| s->depth, |
| s->step, idx); |
| } else { |
| av_image_copy_plane(out->data[0], out->linesize[0], |
| frame->data[idx], frame->linesize[idx], |
| s->linesize[idx], outlink->h); |
| } |
| |
| ret = ff_filter_frame(outlink, out); |
| if (ret == AVERROR_EOF) |
| eof++; |
| else if (ret < 0) |
| break; |
| } |
| av_frame_free(&frame); |
| |
| if (eof == ctx->nb_outputs) |
| ret = AVERROR_EOF; |
| else if (ret == AVERROR_EOF) |
| ret = 0; |
| return ret; |
| } |
| |
| static av_cold int init(AVFilterContext *ctx) |
| { |
| ExtractPlanesContext *s = ctx->priv; |
| int planes = (s->requested_planes & 0xf) | (s->requested_planes >> 4); |
| int i; |
| |
| for (i = 0; i < 4; i++) { |
| char *name; |
| AVFilterPad pad = { 0 }; |
| |
| if (!(planes & (1 << i))) |
| continue; |
| |
| name = av_asprintf("out%d", ctx->nb_outputs); |
| if (!name) |
| return AVERROR(ENOMEM); |
| s->map[ctx->nb_outputs] = i; |
| pad.name = name; |
| pad.type = AVMEDIA_TYPE_VIDEO; |
| pad.config_props = config_output; |
| |
| ff_insert_outpad(ctx, ctx->nb_outputs, &pad); |
| } |
| |
| return 0; |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| int i; |
| |
| for (i = 0; i < ctx->nb_outputs; i++) |
| av_freep(&ctx->output_pads[i].name); |
| } |
| |
| static const AVFilterPad extractplanes_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .filter_frame = filter_frame, |
| .config_props = config_input, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vf_extractplanes = { |
| .name = "extractplanes", |
| .description = NULL_IF_CONFIG_SMALL("Extract planes as grayscale frames."), |
| .priv_size = sizeof(ExtractPlanesContext), |
| .priv_class = &extractplanes_class, |
| .init = init, |
| .uninit = uninit, |
| .query_formats = query_formats, |
| .inputs = extractplanes_inputs, |
| .outputs = NULL, |
| .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
| }; |
| |
| #if CONFIG_ALPHAEXTRACT_FILTER |
| |
| static av_cold int init_alphaextract(AVFilterContext *ctx) |
| { |
| ExtractPlanesContext *s = ctx->priv; |
| |
| s->requested_planes = PLANE_A; |
| |
| return init(ctx); |
| } |
| |
| AVFilter ff_vf_alphaextract = { |
| .name = "alphaextract", |
| .description = NULL_IF_CONFIG_SMALL("Extract an alpha channel as a " |
| "grayscale image component."), |
| .priv_size = sizeof(ExtractPlanesContext), |
| .init = init_alphaextract, |
| .uninit = uninit, |
| .query_formats = query_formats, |
| .inputs = extractplanes_inputs, |
| .outputs = NULL, |
| .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
| }; |
| #endif /* CONFIG_ALPHAEXTRACT_FILTER */ |
