100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
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/*
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* Copyright 2021-2022 Collabora, Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "config.h"
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#include <stdint.h>
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#include <libweston/libweston.h>
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#include <assert.h>
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#include <string.h>
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#include "drm-internal.h"
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#include "libdrm-updates.h"
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int
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drm_output_ensure_hdr_output_metadata_blob(struct drm_output *output)
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{
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struct hdr_output_metadata meta;
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uint32_t blob_id = 0;
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int ret;
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if (output->hdr_output_metadata_blob_id)
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return 0;
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/*
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* Set up the data for Dynamic Range and Mastering InfoFrame,
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* CTA-861-G, a.k.a the static HDR metadata.
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*/
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memset(&meta, 0, sizeof meta);
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meta.metadata_type = 0; /* Static Metadata Type 1 */
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/* Duplicated field in UABI struct */
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meta.hdmi_metadata_type1.metadata_type = meta.metadata_type;
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switch (output->base.eotf_mode) {
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case WESTON_EOTF_MODE_NONE:
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assert(0 && "bad eotf_mode: none");
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return -1;
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case WESTON_EOTF_MODE_SDR:
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/*
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* Do not send any static HDR metadata. Video sinks should
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* respond by switching to traditional SDR mode. If they
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* do not, the kernel should fix that up.
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*/
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assert(output->hdr_output_metadata_blob_id == 0);
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return 0;
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case WESTON_EOTF_MODE_TRADITIONAL_HDR:
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meta.hdmi_metadata_type1.eotf = 1; /* from CTA-861-G */
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break;
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case WESTON_EOTF_MODE_ST2084:
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meta.hdmi_metadata_type1.eotf = 2; /* from CTA-861-G */
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break;
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case WESTON_EOTF_MODE_HLG:
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meta.hdmi_metadata_type1.eotf = 3; /* from CTA-861-G */
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break;
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}
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if (meta.hdmi_metadata_type1.eotf == 0) {
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assert(0 && "bad eotf_mode");
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return -1;
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}
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/* The other fields are intentionally left as zeroes. */
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ret = drmModeCreatePropertyBlob(output->backend->drm.fd,
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&meta, sizeof meta, &blob_id);
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if (ret != 0) {
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weston_log("Error: failed to create KMS blob for HDR metadata on output '%s': %s\n",
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output->base.name, strerror(-ret));
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return -1;
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}
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output->hdr_output_metadata_blob_id = blob_id;
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return 0;
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}
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