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https://github.com/FFmpeg/FFmpeg.git
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7ee64631f6
Despite the suggestive size limits, this metadata ID has nothing to do with the VDR metadata ID used for the data mappings. Actually, the specification leaves them wholly unexplained, other than acknowleding their existence. Must be some secret dolby sauce. They're not even involved in DM metadata compression, which is handled using an entirely separate ID. That leaves us with a lack of anything sensible to do with these IDs. Since we unfortunately only expose one `dm_metadata_id` field to the user, just ensure that they match; which appears to always be the case in practice. If somebody ever hits this error, I would really much rather like to see the triggering file.
135 lines
3.6 KiB
C
135 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/mem.h"
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#include "dovi_rpu.h"
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#include "refstruct.h"
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void ff_dovi_ctx_unref(DOVIContext *s)
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{
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ff_refstruct_unref(&s->dm);
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for (int i = 0; i < FF_ARRAY_ELEMS(s->vdr); i++)
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ff_refstruct_unref(&s->vdr[i]);
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ff_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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void ff_dovi_ctx_flush(DOVIContext *s)
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{
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ff_refstruct_unref(&s->dm);
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for (int i = 0; i < FF_ARRAY_ELEMS(s->vdr); i++)
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ff_refstruct_unref(&s->vdr[i]);
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ff_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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ff_refstruct_replace(&s->dm, s0->dm);
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for (int i = 0; i <= DOVI_MAX_DM_ID; i++)
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ff_refstruct_replace(&s->vdr[i], s0->vdr[i]);
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ff_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, 4 },
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{ 2, 1 },
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{ 2, 1 },
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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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