mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2026-11-06 05:17:42 +00:00
Kacper Michajłow
5986d30314
The defaults of an RPU without display management metadata had the two chroma coefficients of the green row with the wrong sign and the offsets as 1/4 and 2, where ETSI GS CCM 001 clause 6.2.2 gives -1754 and -4383 and the offsets 1/16 and 1/2, as every stream carries them.
136 lines
3.6 KiB
C
136 lines
3.6 KiB
C
/*
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* Dolby Vision RPU decoder
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*
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* Copyright (C) 2021 Jan Ekström
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* Copyright (C) 2021-2024 Niklas Haas
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*
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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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#include "libavutil/attributes.h"
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#include "libavutil/mem.h"
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#include "dovi_rpu.h"
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#include "libavutil/refstruct.h"
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void ff_dovi_ctx_unref(DOVIContext *s)
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{
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av_refstruct_unref(&s->dm);
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for (int i = 0; i < FF_ARRAY_ELEMS(s->vdr); i++)
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av_refstruct_unref(&s->vdr[i]);
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av_refstruct_unref(&s->ext_blocks);
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av_free(s->rpu_buf);
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*s = (DOVIContext) {
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.logctx = s->logctx,
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};
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}
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av_cold void ff_dovi_ctx_flush(DOVIContext *s)
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{
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av_refstruct_unref(&s->dm);
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for (int i = 0; i < FF_ARRAY_ELEMS(s->vdr); i++)
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av_refstruct_unref(&s->vdr[i]);
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av_refstruct_unref(&s->ext_blocks);
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*s = (DOVIContext) {
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.logctx = s->logctx,
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.cfg = s->cfg,
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/* preserve temporary buffer */
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.rpu_buf = s->rpu_buf,
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.rpu_buf_sz = s->rpu_buf_sz,
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};
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}
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void ff_dovi_ctx_replace(DOVIContext *s, const DOVIContext *s0)
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{
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s->logctx = s0->logctx;
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s->cfg = s0->cfg;
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s->header = s0->header;
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s->mapping = s0->mapping;
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s->color = s0->color;
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av_refstruct_replace(&s->dm, s0->dm);
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for (int i = 0; i <= DOVI_MAX_DM_ID; i++)
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av_refstruct_replace(&s->vdr[i], s0->vdr[i]);
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av_refstruct_replace(&s->ext_blocks, s0->ext_blocks);
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}
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int ff_dovi_guess_profile_hevc(const AVDOVIRpuDataHeader *hdr)
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{
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switch (hdr->vdr_rpu_profile) {
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case 0:
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if (hdr->bl_video_full_range_flag)
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return 5;
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break;
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case 1:
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if (hdr->el_spatial_resampling_filter_flag && !hdr->disable_residual_flag) {
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if (hdr->vdr_bit_depth == 12) {
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return 7;
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} else {
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return 4;
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}
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} else {
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return 8;
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}
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}
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return 0; /* unknown */
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}
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const AVDOVIColorMetadata ff_dovi_color_default = {
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.dm_metadata_id = 0,
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.scene_refresh_flag = 0,
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.ycc_to_rgb_matrix = {
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{ 9575, 8192 },
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{ 0, 8192 },
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{ 14742, 8192 },
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{ 9575, 8192 },
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{ -1754, 8192 },
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{ -4383, 8192 },
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{ 9575, 8192 },
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{ 17372, 8192 },
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{ 0, 8192 },
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},
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.ycc_to_rgb_offset = {
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{ 1, 16 },
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{ 1, 2 },
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{ 1, 2 },
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},
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.rgb_to_lms_matrix = {
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{ 5845, 16384 },
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{ 9702, 16384 },
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{ 837, 16384 },
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{ 2568, 16384 },
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{ 12256, 16384 },
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{ 1561, 16384 },
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{ 0, 16384 },
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{ 679, 16384 },
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{ 15705, 16384 },
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},
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.signal_eotf = 39322,
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.signal_eotf_param0 = 15867,
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.signal_eotf_param1 = 228,
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.signal_eotf_param2 = 1383604,
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.signal_bit_depth = 14,
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.signal_color_space = 0,
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.signal_chroma_format = 0,
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.signal_full_range_flag = 1,
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.source_min_pq = 62,
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.source_max_pq = 3696,
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.source_diagonal = 42,
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};
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