edid: Integrate libdisplay-info for edid parsing

Hides libdisplay-info under a build time default-off flag,
provides provision to parse essential edid parameters with
APIs provided by libdisplay-info. This implementaion increases
readibility, avoids code duplication and decreases complexity
of edid parsing.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2642>
This commit is contained in:
adarshgm 2023-03-07 05:21:19 +00:00 committed by Jonas Ådahl
parent d643eb5c6f
commit 7f18cae282
8 changed files with 245 additions and 20 deletions

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@ -109,3 +109,6 @@
/* Whether the Xwayland supports +/-byteswappedclients */
#mesondefine HAVE_XWAYLAND_BYTE_SWAPPED_CLIENTS
/* Defined if libdisplay-info is enabled */
#mesondefine HAVE_LIBDISPLAY_INFO

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@ -168,6 +168,10 @@ if have_x11_client
xau_dep = dependency('xau')
endif
have_libdisplay_info = get_option('libdisplay_info')
if have_libdisplay_info
libdisplay_info_dep = dependency('libdisplay-info')
endif
have_gnome_desktop = get_option('libgnome_desktop')
if have_gnome_desktop
@ -532,6 +536,7 @@ cdata.set('HAVE_SM', have_sm)
cdata.set('HAVE_STARTUP_NOTIFICATION', have_startup_notification)
cdata.set('HAVE_INTROSPECTION', have_introspection)
cdata.set('HAVE_PROFILER', have_profiler)
cdata.set('HAVE_LIBDISPLAY_INFO', have_libdisplay_info)
if have_x11_client
xkb_base = xkeyboard_config_dep.get_variable('xkb_base')
@ -687,6 +692,7 @@ summary('Native Backend', have_native_backend, section: 'Options')
summary('EGL Device', have_egl_device, section: 'Options')
summary('Remote desktop', have_remote_desktop, section: 'Options')
summary('libgnome-desktop', have_gnome_desktop, section: 'Options')
summary('libdisplay-info', have_libdisplay_info, section: 'Options')
summary('Sound player', have_sound_player, section: 'Options')
summary('gudev', have_libgudev, section: 'Options')
summary('Wacom', have_libwacom, section: 'Options')

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@ -224,3 +224,9 @@ option('catch',
value: false,
description: 'Use catch to catch backtraces'
)
option('libdisplay_info',
type: 'boolean',
value: false,
description: 'Build with or without libdisplay-info'
)

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@ -29,6 +29,11 @@
#include <math.h>
#include <glib.h>
#ifdef HAVE_LIBDISPLAY_INFO
#include <libdisplay-info/edid.h>
#include <libdisplay-info/info.h>
#endif
#include "backends/edid.h"
/* VESA E-EDID */
@ -313,19 +318,217 @@ decode_extensions (const uint8_t *edid,
return TRUE;
}
#ifdef HAVE_LIBDISPLAY_INFO
static void
decode_edid_descriptors (const struct di_edid *di_edid,
const struct di_edid_display_descriptor *desc,
MetaEdidInfo *info)
{
enum di_edid_display_descriptor_tag desc_tag;
desc_tag = di_edid_display_descriptor_get_tag (desc);
switch (desc_tag)
{
case DI_EDID_DISPLAY_DESCRIPTOR_PRODUCT_SERIAL:
info->dsc_serial_number = di_edid_display_descriptor_get_string (desc);
break;
case DI_EDID_DISPLAY_DESCRIPTOR_PRODUCT_NAME:
info->dsc_product_name = di_edid_display_descriptor_get_string (desc);
break;
}
}
static void
decode_edid_colorimetry (const struct di_cta_colorimetry_block *colorimetry,
MetaEdidInfo *info)
{
/* Colorimetry Data Block */
if (colorimetry->xvycc_601)
info->colorimetry |= META_EDID_COLORIMETRY_XVYCC601;
if (colorimetry->xvycc_709)
info->colorimetry |= META_EDID_COLORIMETRY_XVYCC709;
if (colorimetry->sycc_601)
info->colorimetry |= META_EDID_COLORIMETRY_SYCC601;
if (colorimetry->opycc_601)
info->colorimetry |= META_EDID_COLORIMETRY_OPYCC601;
if (colorimetry->oprgb)
info->colorimetry |= META_EDID_COLORIMETRY_OPRGB;
if (colorimetry->bt2020_cycc)
info->colorimetry |= META_EDID_COLORIMETRY_BT2020CYCC;
if (colorimetry->bt2020_ycc)
info->colorimetry |= META_EDID_COLORIMETRY_BT2020YCC;
if (colorimetry->bt2020_rgb)
info->colorimetry |= META_EDID_COLORIMETRY_BT2020RGB;
if (colorimetry->st2113_rgb)
info->colorimetry |= META_EDID_COLORIMETRY_ST2113RGB;
if (colorimetry->ictcp)
info->colorimetry |= META_EDID_COLORIMETRY_ICTCP;
}
static void
decode_edid_hdr_static_metadata (const struct di_cta_hdr_static_metadata_block *hdr,
MetaEdidInfo *info)
{
/* HDR Static Metadata Block */
if (hdr->eotfs->traditional_sdr)
info->hdr_static_metadata.tf |= META_EDID_TF_TRADITIONAL_GAMMA_SDR;
if (hdr->eotfs->traditional_hdr)
info->hdr_static_metadata.tf |= META_EDID_TF_TRADITIONAL_GAMMA_HDR;
if (hdr->eotfs->pq)
info->hdr_static_metadata.tf |= META_EDID_TF_PQ;
if (hdr->eotfs->hlg)
info->hdr_static_metadata.tf |= META_EDID_TF_HLG;
if (hdr->descriptors->type1)
info->hdr_static_metadata.sm |= META_EDID_STATIC_METADATA_TYPE1;
if (hdr->desired_content_max_luminance != 0)
info->hdr_static_metadata.max_luminance = round (hdr->desired_content_max_luminance);
if (hdr->desired_content_max_frame_avg_luminance != 0)
info->hdr_static_metadata.max_fal = hdr->desired_content_max_frame_avg_luminance;
if (hdr->desired_content_min_luminance != 0)
info->hdr_static_metadata.min_luminance = round (hdr->desired_content_min_luminance);
}
static void
decode_edid_cta_ext (const struct di_edid_cta *cta,
MetaEdidInfo *info)
{
const struct di_cta_data_block *const *data_blks;
const struct di_cta_data_block *data_blk;
enum di_cta_data_block_tag data_blk_tag;
const struct di_cta_colorimetry_block *colorimetry;
const struct di_cta_hdr_static_metadata_block *hdr_static_metadata;
data_blks = di_edid_cta_get_data_blocks (cta);
for (data_index = 0; data_blks[data_index]!=NULL; data_index++)
{
data_blk = data_blks[data_index];
data_blk_tag = di_cta_data_block_get_tag (data_blk);
switch (data_blk_tag)
{
case DI_CTA_DATA_BLOCK_COLORIMETRY:
colorimetry = di_cta_data_block_get_colorimetry (data_blk);
g_assert (colorimetry);
decode_edid_colorimetry (colorimetry, info)
break;
case DI_CTA_DATA_BLOCK_HDR_STATIC_METADATA:
hdr_static_metadata = di_cta_data_block_get_hdr_static_metadata (data_blk);
g_assert (hdr_static_metadata);
decode_edid_hdr_static_metadata (hdr_static_metadata, info);
break;
}
}
}
static void
decode_edid_extensions (const struct di_edid_ext *ext,
MetaEdidInfo *info)
{
enum di_edid_ext_tag ext_tag;
const struct di_edid_cta *cta;
ext_tag = di_edid_ext_get_tag (ext);
switch (ext_tag)
{
case DI_EDID_EXT_CEA:
cta = di_edid_ext_get_cta (ext);
decode_edid_cta_ext (cta, info);
break;
}
}
#endif
static gboolean
decode_edid_info (const uint8_t *edid,
MetaEdidInfo *info,
size_t size)
{
#ifdef HAVE_LIBDISPLAY_INFO
const struct di_edid *di_edid;
struct di_info *edid_info;
const struct di_edid_vendor_product *vendor_product;
const struct di_edid_chromaticity_coords *chromaticity_coords;
float gamma;
const struct di_edid_display_descriptor *const *edid_descriptors;
const struct di_edid_ext *const *extensions;
edid_info = di_info_parse_edid (edid, size);
if (!edid_info)
{
return FALSE;
}
di_edid = di_info_get_edid (edid_info);
/* Vendor and Product identification */
vendor_product = di_edid_get_vendor_product (di_edid);
/* Manufacturer Code */
strncpy (info->manufacturer_code, vendor_product->manufacturer,
sizeof(info->manufacturer_code));
/* Product Code */
info->product_code = vendor_product->product;
/* Serial Number */
info->serial_number = vendor_product->serial;
/* Color Characteristics */
chromaticity_coords = di_edid_get_chromaticity_coords (di_edid);
info->red_x = chromaticity_coords->red_x;
info->red_y = chromaticity_coords->red_y;
info->green_x = chromaticity_coords->green_x;
info->green_y = chromaticity_coords->green_y;
info->blue_x = chromaticity_coords->blue_x;
info->blue_y = chromaticity_coords->blue_y;
info->white_x = chromaticity_coords->white_x;
info->white_y = chromaticity_coords->white_y;
/* Gamma */
gamma = di_edid_get_basic_gamma (di_edid);
if (gamma != 0)
info->gamma = gamma;
else
info->gamma = -1;
/* Descriptors */
edid_descriptors = di_edid_get_display_descriptors (di_edid);
for (desc_index = 0; edid_descriptors[desc_index] != NULL; i++)
{
decode_edid_descriptors (di_edid, edid_descriptors[desc_index], info);
}
/* Extension Blocks */
extensions = di_edid_get_extensions (di_edid);
for (ext_index = 0; extensions[ext_index] != NULL; i++)
{
decode_edid_extensions (extensions[ext_index], info);
}
return TRUE;
#else
return decode_header (edid) &&
decode_vendor_and_product_identification (edid, info) &&
decode_display_parameters (edid, info) &&
decode_color_characteristics (edid, info) &&
decode_descriptors (edid, info) &&
decode_extensions (edid, info);
#endif
}
MetaEdidInfo *
meta_edid_info_new_parse (const uint8_t *edid)
meta_edid_info_new_parse (const uint8_t *edid,
size_t size)
{
MetaEdidInfo *info;
info = g_new0 (MetaEdidInfo, 1);
if (decode_header (edid)
&& decode_vendor_and_product_identification (edid, info)
&& decode_display_parameters (edid, info)
&& decode_color_characteristics (edid, info)
&& decode_descriptors (edid, info)
&& decode_extensions (edid, info))
if (decode_edid_info (edid, info, size))
{
return info;
}

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@ -96,6 +96,7 @@ struct _MetaEdidInfo
};
META_EXPORT_TEST
MetaEdidInfo *meta_edid_info_new_parse (const uint8_t *data);
MetaEdidInfo *meta_edid_info_new_parse (const uint8_t *edid,
size_t size);
#endif

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@ -355,17 +355,17 @@ meta_output_info_parse_edid (MetaOutputInfo *output_info,
GBytes *edid)
{
MetaEdidInfo *edid_info;
size_t len;
size_t size;
gconstpointer data;
g_return_if_fail (!output_info->edid_info);
g_return_if_fail (edid);
data = g_bytes_get_data (edid, &len);
edid_info = meta_edid_info_new_parse (data);
data = g_bytes_get_data (edid, &size);
edid_info = meta_edid_info_new_parse (data, size);
output_info->edid_checksum_md5 = g_compute_checksum_for_data (G_CHECKSUM_MD5,
data, len);
data, size);
if (edid_info)
{

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@ -35,6 +35,12 @@ if have_gnome_desktop
]
endif
if have_libdisplay_info
mutter_pkg_private_deps += [
libdisplay_info_dep,
]
endif
if have_sound_player
mutter_pkg_private_deps += [
libcanberra_dep,

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@ -65,15 +65,15 @@ int
main (int argc,
char **argv)
{
MetaEdidInfo *edid;
MetaEdidInfo *edid_info;
edid_info = meta_edid_info_new_parse (edid_blob,edid_blob_len);
edid = meta_edid_info_new_parse (edid_blob);
g_assert (edid != NULL);
g_assert (strcmp (edid->manufacturer_code, "GSM") == 0);
g_assert (edid->product_code == 23507);
g_assert (edid->hdr_static_metadata.max_luminance == 97);
g_assert (edid->hdr_static_metadata.tf ==
g_assert (edid_info != NULL);
g_assert (strcmp (edid_info->manufacturer_code, "GSM") == 0);
g_assert (edid_info->product_code == 23507);
g_assert (edid_info->hdr_static_metadata.max_luminance == 97);
g_assert (edid_info->hdr_static_metadata.tf ==
(META_EDID_TF_TRADITIONAL_GAMMA_SDR | META_EDID_TF_PQ));
g_assert (edid->colorimetry ==
g_assert (edid_info->colorimetry ==
(META_EDID_COLORIMETRY_BT2020YCC | META_EDID_COLORIMETRY_BT2020RGB));
}