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2f62a433f2
Lots of video filters use a very simple input or output: An array with a single AVFilterPad whose name is "default" and whose type is AVMEDIA_TYPE_VIDEO; everything else is unset. Given that we never use pointer equality for inputs or outputs*, we can simply use a single AVFilterPad instead of dozens; this even saves .data.rel.ro (8312B here) as well as relocations. *: In fact, several filters (like the filters in vf_lut.c) already use the same outputs; furthermore, ff_filter_alloc() duplicates the input and output pads so that we do not even work with the pads directly. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
176 lines
8.1 KiB
C
176 lines
8.1 KiB
C
/*
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* Copyright (c) 2022 Niklas Haas
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* filter for generating ICC profiles
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*/
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#include <lcms2.h>
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "fflcms2.h"
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#include "internal.h"
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#include "video.h"
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typedef struct IccGenContext {
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const AVClass *class;
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FFIccContext icc;
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/* options */
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int color_prim;
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int color_trc;
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int force;
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/* (cached) generated ICC profile */
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cmsHPROFILE profile;
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int profile_prim;
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int profile_trc;
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} IccGenContext;
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#define OFFSET(x) offsetof(IccGenContext, x)
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#define VF AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
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static const AVOption iccgen_options[] = {
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{"color_primaries", "select color primaries", OFFSET(color_prim), AV_OPT_TYPE_INT, {.i64=0}, 0, AVCOL_PRI_NB-1, VF, "color_primaries"},
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{"auto", "infer based on frame", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, VF, "color_primaries"},
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{"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT709}, 0, 0, VF, "color_primaries"},
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{"bt470m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT470M}, 0, 0, VF, "color_primaries"},
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{"bt470bg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT470BG}, 0, 0, VF, "color_primaries"},
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{"smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE170M}, 0, 0, VF, "color_primaries"},
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{"smpte240m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE240M}, 0, 0, VF, "color_primaries"},
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{"film", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_FILM}, 0, 0, VF, "color_primaries"},
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{"bt2020", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_BT2020}, 0, 0, VF, "color_primaries"},
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{"smpte428", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE428}, 0, 0, VF, "color_primaries"},
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{"smpte431", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE431}, 0, 0, VF, "color_primaries"},
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{"smpte432", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_SMPTE432}, 0, 0, VF, "color_primaries"},
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{"jedec-p22", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_JEDEC_P22}, 0, 0, VF, "color_primaries"},
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{"ebu3213", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_PRI_EBU3213}, 0, 0, VF, "color_primaries"},
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{"color_trc", "select color transfer", OFFSET(color_trc), AV_OPT_TYPE_INT, {.i64=0}, 0, AVCOL_TRC_NB-1, VF, "color_trc"},
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{"auto", "infer based on frame", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, VF, "color_trc"},
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{"bt709", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT709}, 0, 0, VF, "color_trc"},
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{"bt470m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_GAMMA22}, 0, 0, VF, "color_trc"},
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{"bt470bg", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_GAMMA28}, 0, 0, VF, "color_trc"},
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{"smpte170m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_SMPTE170M}, 0, 0, VF, "color_trc"},
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{"smpte240m", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_SMPTE240M}, 0, 0, VF, "color_trc"},
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{"linear", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_LINEAR}, 0, 0, VF, "color_trc"},
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{"iec61966-2-4", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_IEC61966_2_4}, 0, 0, VF, "color_trc"},
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{"bt1361e", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT1361_ECG}, 0, 0, VF, "color_trc"},
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{"iec61966-2-1", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_IEC61966_2_1}, 0, 0, VF, "color_trc"},
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{"bt2020-10", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT2020_10}, 0, 0, VF, "color_trc"},
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{"bt2020-12", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_BT2020_12}, 0, 0, VF, "color_trc"},
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{"smpte2084", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_SMPTE2084}, 0, 0, VF, "color_trc"},
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{"arib-std-b67", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVCOL_TRC_ARIB_STD_B67}, 0, 0, VF, "color_trc"},
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{ "force", "overwrite existing ICC profile", OFFSET(force), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, VF },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(iccgen);
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static av_cold void iccgen_uninit(AVFilterContext *avctx)
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{
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IccGenContext *s = avctx->priv;
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cmsCloseProfile(s->profile);
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ff_icc_context_uninit(&s->icc);
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}
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static av_cold int iccgen_init(AVFilterContext *avctx)
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{
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IccGenContext *s = avctx->priv;
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return ff_icc_context_init(&s->icc, avctx);
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}
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static int iccgen_filter_frame(AVFilterLink *inlink, AVFrame *frame)
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{
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AVFilterContext *avctx = inlink->dst;
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IccGenContext *s = avctx->priv;
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enum AVColorTransferCharacteristic trc;
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enum AVColorPrimaries prim;
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int ret;
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if (av_frame_get_side_data(frame, AV_FRAME_DATA_ICC_PROFILE)) {
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if (s->force) {
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av_frame_remove_side_data(frame, AV_FRAME_DATA_ICC_PROFILE);
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} else {
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return ff_filter_frame(inlink->dst->outputs[0], frame);
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}
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}
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trc = s->color_trc ? s->color_trc : frame->color_trc;
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if (trc == AVCOL_TRC_UNSPECIFIED) {
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
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if (!desc)
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return AVERROR_INVALIDDATA;
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if ((desc->flags & AV_PIX_FMT_FLAG_RGB) || frame->color_range == AVCOL_RANGE_JPEG) {
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/* Default to sRGB for RGB or full-range content */
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trc = AVCOL_TRC_IEC61966_2_1;
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} else {
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/* Default to an ITU-R transfer depending on the bit-depth */
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trc = desc->comp[0].depth >= 12 ? AVCOL_TRC_BT2020_12
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: desc->comp[0].depth >= 10 ? AVCOL_TRC_BT2020_10
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: AVCOL_TRC_BT709;
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}
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}
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prim = s->color_prim ? s->color_prim : frame->color_primaries;
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if (prim == AVCOL_PRI_UNSPECIFIED) {
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/* Simply always default to sRGB/BT.709 primaries to avoid surprises */
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prim = AVCOL_PRI_BT709;
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}
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if (s->profile && prim != s->profile_prim && trc != s->profile_trc) {
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cmsCloseProfile(s->profile);
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s->profile = NULL;
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}
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if (!s->profile) {
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if ((ret = ff_icc_profile_generate(&s->icc, prim, trc, &s->profile)) < 0)
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return ret;
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s->profile_prim = prim;
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s->profile_trc = trc;
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}
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if ((ret = ff_icc_profile_attach(&s->icc, s->profile, frame)) < 0)
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return ret;
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return ff_filter_frame(inlink->dst->outputs[0], frame);
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}
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static const AVFilterPad iccgen_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = iccgen_filter_frame,
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},
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};
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const AVFilter ff_vf_iccgen = {
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.name = "iccgen",
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.description = NULL_IF_CONFIG_SMALL("Generate and attach ICC profiles."),
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.priv_size = sizeof(IccGenContext),
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.priv_class = &iccgen_class,
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.flags = AVFILTER_FLAG_METADATA_ONLY,
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.init = &iccgen_init,
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.uninit = &iccgen_uninit,
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FILTER_INPUTS(iccgen_inputs),
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FILTER_OUTPUTS(ff_video_default_filterpad),
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};
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