/* * Copyright (c) 2022 Niklas Haas * 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 * filter for generating ICC profiles */ #include #include "libavutil/opt.h" #include "libavutil/pixdesc.h" #include "avfilter.h" #include "fflcms2.h" #include "internal.h" typedef struct IccGenContext { const AVClass *class; FFIccContext icc; /* options */ int color_prim; int color_trc; int force; /* (cached) generated ICC profile */ cmsHPROFILE profile; int profile_prim; int profile_trc; } IccGenContext; #define OFFSET(x) offsetof(IccGenContext, x) #define VF AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM static const AVOption iccgen_options[] = { {"color_primaries", "select color primaries", OFFSET(color_prim), AV_OPT_TYPE_INT, {.i64=0}, 0, AVCOL_PRI_NB-1, VF, "color_primaries"}, {"auto", "infer based on frame", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, VF, "color_primaries"}, {"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT709}, 0, 0, VF, "color_primaries"}, {"bt470m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT470M}, 0, 0, VF, "color_primaries"}, {"bt470bg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT470BG}, 0, 0, VF, "color_primaries"}, {"smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE170M}, 0, 0, VF, "color_primaries"}, {"smpte240m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE240M}, 0, 0, VF, "color_primaries"}, {"film", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_FILM}, 0, 0, VF, "color_primaries"}, {"bt2020", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT2020}, 0, 0, VF, "color_primaries"}, {"smpte428", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE428}, 0, 0, VF, "color_primaries"}, {"smpte431", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE431}, 0, 0, VF, "color_primaries"}, {"smpte432", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE432}, 0, 0, VF, "color_primaries"}, {"jedec-p22", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_JEDEC_P22}, 0, 0, VF, "color_primaries"}, {"ebu3213", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_EBU3213}, 0, 0, VF, "color_primaries"}, {"color_trc", "select color transfer", OFFSET(color_trc), AV_OPT_TYPE_INT, {.i64=0}, 0, AVCOL_TRC_NB-1, VF, "color_trc"}, {"auto", "infer based on frame", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, VF, "color_trc"}, {"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT709}, 0, 0, VF, "color_trc"}, {"bt470m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_GAMMA22}, 0, 0, VF, "color_trc"}, {"bt470bg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_GAMMA28}, 0, 0, VF, "color_trc"}, {"smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_SMPTE170M}, 0, 0, VF, "color_trc"}, {"smpte240m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_SMPTE240M}, 0, 0, VF, "color_trc"}, {"linear", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_LINEAR}, 0, 0, VF, "color_trc"}, {"iec61966-2-4", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_IEC61966_2_4}, 0, 0, VF, "color_trc"}, {"bt1361e", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT1361_ECG}, 0, 0, VF, "color_trc"}, {"iec61966-2-1", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_IEC61966_2_1}, 0, 0, VF, "color_trc"}, {"bt2020-10", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT2020_10}, 0, 0, VF, "color_trc"}, {"bt2020-12", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT2020_12}, 0, 0, VF, "color_trc"}, {"smpte2084", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_SMPTE2084}, 0, 0, VF, "color_trc"}, {"arib-std-b67", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_ARIB_STD_B67}, 0, 0, VF, "color_trc"}, { "force", "overwrite existing ICC profile", OFFSET(force), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, VF }, { NULL } }; AVFILTER_DEFINE_CLASS(iccgen); static av_cold void iccgen_uninit(AVFilterContext *avctx) { IccGenContext *s = avctx->priv; cmsCloseProfile(s->profile); ff_icc_context_uninit(&s->icc); } static av_cold int iccgen_init(AVFilterContext *avctx) { IccGenContext *s = avctx->priv; return ff_icc_context_init(&s->icc, avctx); } static int iccgen_filter_frame(AVFilterLink *inlink, AVFrame *frame) { AVFilterContext *avctx = inlink->dst; IccGenContext *s = avctx->priv; enum AVColorTransferCharacteristic trc; enum AVColorPrimaries prim; int ret; if (av_frame_get_side_data(frame, AV_FRAME_DATA_ICC_PROFILE)) { if (s->force) { av_frame_remove_side_data(frame, AV_FRAME_DATA_ICC_PROFILE); } else { return ff_filter_frame(inlink->dst->outputs[0], frame); } } trc = s->color_trc ? s->color_trc : frame->color_trc; if (trc == AVCOL_TRC_UNSPECIFIED) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format); if (!desc) return AVERROR_INVALIDDATA; if ((desc->flags & AV_PIX_FMT_FLAG_RGB) || frame->color_range == AVCOL_RANGE_JPEG) { /* Default to sRGB for RGB or full-range content */ trc = AVCOL_TRC_IEC61966_2_1; } else { /* Default to an ITU-R transfer depending on the bit-depth */ trc = desc->comp[0].depth >= 12 ? AVCOL_TRC_BT2020_12 : desc->comp[0].depth >= 10 ? AVCOL_TRC_BT2020_10 : AVCOL_TRC_BT709; } } prim = s->color_prim ? s->color_prim : frame->color_primaries; if (prim == AVCOL_PRI_UNSPECIFIED) { /* Simply always default to sRGB/BT.709 primaries to avoid surprises */ prim = AVCOL_PRI_BT709; } if (s->profile && prim != s->profile_prim && trc != s->profile_trc) { cmsCloseProfile(s->profile); s->profile = NULL; } if (!s->profile) { if ((ret = ff_icc_profile_generate(&s->icc, prim, trc, &s->profile)) < 0) return ret; s->profile_prim = prim; s->profile_trc = trc; } if ((ret = ff_icc_profile_attach(&s->icc, s->profile, frame)) < 0) return ret; return ff_filter_frame(inlink->dst->outputs[0], frame); } static const AVFilterPad iccgen_inputs[] = { { .name = "default", .type = AVMEDIA_TYPE_VIDEO, .filter_frame = iccgen_filter_frame, }, }; static const AVFilterPad iccgen_outputs[] = { { .name = "default", .type = AVMEDIA_TYPE_VIDEO, }, }; const AVFilter ff_vf_iccgen = { .name = "iccgen", .description = NULL_IF_CONFIG_SMALL("Generate and attach ICC profiles."), .priv_size = sizeof(IccGenContext), .priv_class = &iccgen_class, .flags = AVFILTER_FLAG_METADATA_ONLY, .init = &iccgen_init, .uninit = &iccgen_uninit, FILTER_INPUTS(iccgen_inputs), FILTER_OUTPUTS(iccgen_outputs), };