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parse-displayid-block.cpp
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parse-displayid-block.cpp
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// SPDX-License-Identifier: MIT
/*
* Copyright 2006-2012 Red Hat, Inc.
* Copyright 2018-2020 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
*
* Author: Adam Jackson <[email protected]>
* Maintainer: Hans Verkuil <[email protected]>
*/
#include <math.h>
#include "edid-decode.h"
static const char *bpc444[] = {"6", "8", "10", "12", "14", "16", NULL, NULL};
static const char *bpc4xx[] = {"8", "10", "12", "14", "16", NULL, NULL, NULL};
static const char *audiorates[] = {"32", "44.1", "48", NULL, NULL, NULL, NULL, NULL};
// misc functions
static void print_flags(const char *label, unsigned char flag_byte,
const char **flags, bool reverse = false)
{
if (!flag_byte)
return;
unsigned countflags = 0;
printf("%s: ", label);
for (unsigned i = 0; i < 8; i++) {
if (flag_byte & (1 << (reverse ? 7 - i : i))) {
if (countflags)
printf(", ");
if (flags[i])
printf("%s", flags[i]);
else
printf("Undefined (%u)", i);
countflags++;
}
}
printf("\n");
}
void edid_state::check_displayid_datablock_revision(unsigned char hdr,
unsigned char valid_flags,
unsigned char rev)
{
unsigned char revision = hdr & 7;
unsigned char flags = hdr & ~7 & ~valid_flags;
if (revision != rev)
warn("Unexpected revision (%u != %u).\n", revision, rev);
if (flags)
warn("Unexpected flags (0x%02x).\n", flags);
}
static bool check_displayid_datablock_length(const unsigned char *x,
unsigned expectedlenmin = 0,
unsigned expectedlenmax = 128 - 2 - 5 - 3,
unsigned payloaddumpstart = 0)
{
unsigned char len = x[2];
if (expectedlenmin == expectedlenmax && len != expectedlenmax)
fail("DisplayID payload length is different than expected (%d != %d).\n", len, expectedlenmax);
else if (len > expectedlenmax)
fail("DisplayID payload length is greater than expected (%d > %d).\n", len, expectedlenmax);
else if (len < expectedlenmin)
fail("DisplayID payload length is less than expected (%d < %d).\n", len, expectedlenmin);
else
return true;
if (len > payloaddumpstart)
hex_block(" ", x + 3 + payloaddumpstart, len - payloaddumpstart);
return false;
}
// tag 0x00 and 0x20
void edid_state::parse_displayid_product_id(const unsigned char *x)
{
check_displayid_datablock_revision(x[1]);
dispid.has_product_identification = true;
printf(" Product Code: %u\n", x[6] | (x[7] << 8));
unsigned sn = x[8] | (x[9] << 8) | (x[10] << 16) | (x[11] << 24);
if (sn) {
if (hide_serial_numbers)
printf(" Serial Number: ...\n");
else
printf(" Serial Number: %u\n", sn);
}
unsigned week = x[12];
unsigned year = 2000 + x[13];
printf(" %s: %u",
week == 0xff ? "Model Year" : "Year of Manufacture", year);
if (week && week <= 0x36)
printf(", Week %u", week);
printf("\n");
if (x[14]) {
char buf[256];
memcpy(buf, x + 15, x[14]);
buf[x[14]] = 0;
printf(" Product ID: %s\n", buf);
}
}
// tag 0x01
static const char *feature_support_flags[] = {
"De-interlacing",
"Support ACP, ISRC1, or ISRC2packets",
"Fixed pixel format",
"Fixed timing",
"Power management (DPM)",
"Audio input override",
"Separate audio inputs provided",
"Audio support on video interface"
};
static void print_flag_lines(const char *indent, const char *label,
unsigned char flag_byte, const char **flags)
{
if (flag_byte) {
printf("%s\n", label);
for (int i = 0; i < 8; i++)
if (flag_byte & (1 << i))
printf("%s%s\n", indent, flags[i]);
}
}
void edid_state::set_displayid_native_res(unsigned w, unsigned h)
{
if (dispid.native_width &&
(dispid.native_width != w || dispid.native_height != h)) {
fail("Native resolution mismatch: %ux%u -> %ux%u.\n",
dispid.native_width, dispid.native_height, w, h);
return;
}
if (!w && !h)
return;
if (!w ^ !h) {
fail("Invalid Native Pixel Format %ux%u.\n", w, h);
} else {
dispid.native_width = w;
dispid.native_height = h;
}
}
void edid_state::parse_displayid_parameters(const unsigned char *x)
{
check_displayid_datablock_revision(x[1]);
if (!check_displayid_datablock_length(x, 12, 12))
return;
if (dispid.has_display_parameters)
fail("Duplicate Display Parameters Data Block.\n");
dispid.has_display_parameters = true;
dispid.image_width = (x[4] << 8) + x[3];
dispid.image_height = (x[6] << 8) + x[5];
if (dispid.image_width > image_width ||
dispid.image_height > image_height) {
image_width = dispid.image_width;
image_height = dispid.image_height;
}
printf(" Image size: %.1f mm x %.1f mm\n",
dispid.image_width / 10.0, dispid.image_height / 10.0);
unsigned w = (x[8] << 8) + x[7];
unsigned h = (x[10] << 8) + x[9];
printf(" Display native pixel format: %ux%u\n", w, h);
set_displayid_native_res(w, h);
print_flag_lines(" ", " Feature support flags:",
x[11], feature_support_flags);
if (x[12] != 0xff)
printf(" Gamma: %.2f\n", ((x[12] + 100.0) / 100.0));
printf(" Aspect ratio: %.2f\n", ((x[13] + 100.0) / 100.0));
printf(" Dynamic bpc native: %d\n", (x[14] & 0xf) + 1);
printf(" Dynamic bpc overall: %d\n", ((x[14] >> 4) & 0xf) + 1);
}
// tag 0x02
static const char *std_colorspace_ids[] = {
"sRGB",
"BT.601",
"BT.709",
"Adobe RGB",
"DCI-P3",
"NTSC",
"EBU",
"Adobe Wide Gamut RGB",
"DICOM"
};
static double fp2d(unsigned short fp)
{
return fp / 4096.0;
}
void edid_state::parse_displayid_color_characteristics(const unsigned char *x)
{
check_displayid_datablock_revision(x[1], 0xf8, 1);
unsigned cie_year = (x[1] & 0x80) ? 1976 : 1931;
unsigned xfer_id = (x[1] >> 3) & 0x0f;
unsigned num_whitepoints = x[3] & 0x0f;
unsigned num_primaries = (x[3] >> 4) & 0x07;
bool temporal_color = x[3] & 0x80;
unsigned offset = 4;
printf(" Uses %s color\n", temporal_color ? "temporal" : "spatial");
printf(" Uses %u CIE (x, y) coordinates\n", cie_year);
if (xfer_id) {
printf(" Associated with Transfer Characteristics Data Block with Identifier %u\n", xfer_id);
if (!(dispid.preparsed_xfer_ids & (1 << xfer_id)))
fail("Missing Transfer Characteristics Data Block with Identifier %u.\n", xfer_id);
}
if (!num_primaries) {
printf(" Uses color space %s\n",
x[4] >= ARRAY_SIZE(std_colorspace_ids) ? "Reserved" :
std_colorspace_ids[x[4]]);
offset++;
}
for (unsigned i = 0; i < num_primaries; i++) {
unsigned idx = offset + 3 * i;
printf(" Primary #%u: (%.4f, %.4f)\n", i,
fp2d(x[idx] | ((x[idx + 1] & 0x0f) << 8)),
fp2d(((x[idx + 1] & 0xf0) >> 4) | (x[idx + 2] << 4)));
}
offset += 3 * num_primaries;
for (unsigned i = 0; i < num_whitepoints; i++) {
unsigned idx = offset + 3 * i;
printf(" White point #%u: (%.4f, %.4f)\n", i,
fp2d(x[idx] | ((x[idx + 1] & 0x0f) << 8)),
fp2d(((x[idx + 1] & 0xf0) >> 4) | (x[idx + 2] << 4)));
}
}
// tag 0x03 and 0x22
void edid_state::parse_displayid_type_1_7_timing(const unsigned char *x,
bool type7, unsigned block_rev, bool is_cta)
{
struct timings t = {};
unsigned hbl, vbl;
std::string name = is_cta ? std::string("VTDB ") + std::to_string(cta.vec_vtdbs.size() + 1) : "DTD";
std::string s("aspect ");
dispid.has_type_1_7 = true;
t.pixclk_khz = (type7 ? 1 : 10) * (1 + (x[0] + (x[1] << 8) + (x[2] << 16)));
switch (x[3] & 0xf) {
case 0:
s += "1:1";
t.hratio = t.vratio = 1;
break;
case 1:
s += "5:4";
t.hratio = 5;
t.vratio = 4;
break;
case 2:
s += "4:3";
t.hratio = 4;
t.vratio = 3;
break;
case 3:
s += "15:9";
t.hratio = 15;
t.vratio = 9;
break;
case 4:
s += "16:9";
t.hratio = 16;
t.vratio = 9;
break;
case 5:
s += "16:10";
t.hratio = 16;
t.vratio = 10;
break;
case 6:
s += "64:27";
t.hratio = 64;
t.vratio = 27;
break;
case 7:
s += "256:135";
t.hratio = 256;
t.vratio = 135;
break;
case 8:
s += "undefined";
break;
default:
s += "reserved";
fail("Unknown aspect 0x%02x.\n", x[3] & 0xf);
break;
}
switch ((x[3] >> 5) & 0x3) {
case 0:
s += ", no 3D stereo";
break;
case 1:
s += ", 3D stereo";
dispid.has_stereo = true;
break;
case 2:
s += ", 3D stereo depends on user action";
dispid.has_stereo = true;
break;
case 3:
s += ", reserved";
fail("Reserved stereo 0x03.\n");
break;
}
if (block_rev >= 2 && (x[3] & 0x80)) {
s += ", YCbCr 4:2:0";
dispid.has_ycbcr_420 = true;
}
t.hact = 1 + (x[4] | (x[5] << 8));
hbl = 1 + (x[6] | (x[7] << 8));
t.hfp = 1 + (x[8] | ((x[9] & 0x7f) << 8));
t.hsync = 1 + (x[10] | (x[11] << 8));
t.hbp = hbl - t.hfp - t.hsync;
if ((x[9] >> 7) & 0x1)
t.pos_pol_hsync = true;
t.vact = 1 + (x[12] | (x[13] << 8));
vbl = 1 + (x[14] | (x[15] << 8));
t.vfp = 1 + (x[16] | ((x[17] & 0x7f) << 8));
t.vsync = 1 + (x[18] | (x[19] << 8));
t.vbp = vbl - t.vfp - t.vsync;
if ((x[17] >> 7) & 0x1)
t.pos_pol_vsync = true;
if (x[3] & 0x10) {
t.interlaced = true;
t.vfp /= 2;
t.vsync /= 2;
t.vbp /= 2;
}
if (block_rev < 2 && (x[3] & 0x80)) {
s += ", preferred";
dispid.preferred_timings.push_back(timings_ext(t, "DTD", s));
}
print_timings(" ", &t, name.c_str(), s.c_str(), true);
if (is_cta) {
timings_ext te(t, name.c_str(), s);
cta.vec_vtdbs.push_back(te);
// Only use a T7VTDB if is cannot be expressed by a
// DTD or a T10VTDB.
if (t.hact <= 4095 && t.vact <= 4095 &&
t.pixclk_khz <= 655360 && !(x[3] & 0xe0)) {
fail("This T7VTDB can be represented as an 18-byte DTD.\n");
return;
}
unsigned htot = t.hact + t.hfp + t.hsync + t.hbp;
unsigned vtot = t.vact + t.vfp + t.vsync + t.vbp;
unsigned refresh = (t.pixclk_khz * 1000ULL) / (htot * vtot);
for (unsigned rb = RB_NONE; rb <= RB_CVT_V3; rb++) {
timings cvt_t = calc_cvt_mode(t.hact, t.vact, refresh, rb);
if (match_timings(t, cvt_t)) {
fail("This T7VTDB can be represented as a T10VTDB.\n");
return;
}
}
timings cvt_t = calc_cvt_mode(t.hact, t.vact, refresh, RB_CVT_V3,
false, false, true);
if (match_timings(t, cvt_t))
fail("This T7VTDB can be represented as a T10VTDB.\n");
}
}
// tag 0x04
void edid_state::parse_displayid_type_2_timing(const unsigned char *x)
{
struct timings t = {};
unsigned hbl, vbl;
std::string s("aspect ");
t.pixclk_khz = 10 * (1 + (x[0] + (x[1] << 8) + (x[2] << 16)));
t.hact = 8 + 8 * (x[4] | ((x[5] & 0x01) << 8));
hbl = 8 + 8 * ((x[5] & 0xfe) >> 1);
t.hfp = 8 + 8 * ((x[6] & 0xf0) >> 4);
t.hsync = 8 + 8 * (x[6] & 0xf);
t.hbp = hbl - t.hfp - t.hsync;
if ((x[3] >> 3) & 0x1)
t.pos_pol_hsync = true;
t.vact = 1 + (x[7] | ((x[8] & 0xf) << 8));
vbl = 1 + x[9];
t.vfp = 1 + (x[10] >> 4);
t.vsync = 1 + (x[10] & 0xf);
t.vbp = vbl - t.vfp - t.vsync;
if ((x[17] >> 2) & 0x1)
t.pos_pol_vsync = true;
if (x[3] & 0x10) {
t.interlaced = true;
t.vfp /= 2;
t.vsync /= 2;
t.vbp /= 2;
}
calc_ratio(&t);
s += std::to_string(t.hratio) + ":" + std::to_string(t.vratio);
switch ((x[3] >> 5) & 0x3) {
case 0:
s += ", no 3D stereo";
break;
case 1:
s += ", 3D stereo";
dispid.has_stereo = true;
break;
case 2:
s += ", 3D stereo depends on user action";
dispid.has_stereo = true;
break;
case 3:
s += ", reserved";
fail("Reserved stereo 0x03.\n");
break;
}
if (x[3] & 0x80) {
s += ", preferred";
dispid.preferred_timings.push_back(timings_ext(t, "DTD", s));
}
print_timings(" ", &t, "DTD", s.c_str(), true);
}
// tag 0x05
void edid_state::parse_displayid_type_3_timing(const unsigned char *x)
{
struct timings t = {};
std::string s("aspect ");
switch (x[0] & 0xf) {
case 0:
s += "1:1";
t.hratio = t.vratio = 1;
break;
case 1:
s += "5:4";
t.hratio = 5;
t.vratio = 4;
break;
case 2:
s += "4:3";
t.hratio = 4;
t.vratio = 3;
break;
case 3:
s += "15:9";
t.hratio = 15;
t.vratio = 9;
break;
case 4:
s += "16:9";
t.hratio = 16;
t.vratio = 9;
break;
case 5:
s += "16:10";
t.hratio = 16;
t.vratio = 10;
break;
case 6:
s += "64:27";
t.hratio = 64;
t.vratio = 27;
break;
case 7:
s += "256:135";
t.hratio = 256;
t.vratio = 135;
break;
case 8:
s += "undefined";
break;
default:
s += "reserved";
fail("Unknown aspect 0x%02x.\n", x[0] & 0xf);
break;
}
t.rb = ((x[0] & 0x70) >> 4) == 1 ? RB_CVT_V1 : RB_NONE;
t.hact = 8 + 8 * x[1];
t.vact = t.hact * t.vratio / t.hratio;
edid_cvt_mode(1 + (x[2] & 0x7f), t);
if (x[0] & 0x80) {
s += ", preferred";
dispid.preferred_timings.push_back(timings_ext(t, "CVT", s));
}
print_timings(" ", &t, "CVT", s.c_str());
}
// tag 0x06 and 0x23
void edid_state::parse_displayid_type_4_8_timing(unsigned char type, unsigned short id, bool is_cta)
{
const struct timings *t = NULL;
char type_name[16];
switch (type) {
case 0: t = find_dmt_id(id); sprintf(type_name, "DMT 0x%02x", id); break;
case 1: t = find_vic_id(id); sprintf(type_name, "VIC %3u", id); break;
case 2: t = find_hdmi_vic_id(id); sprintf(type_name, "HDMI VIC %u", id); break;
default: break;
}
if (t)
print_timings(" ", t, type_name);
if (t && is_cta && !cta.t8vtdb.is_valid()) {
timings_ext te(*t, type_name, "");
cta.t8vtdb = te;
}
}
// tag 0x09
void edid_state::parse_displayid_video_timing_range_limits(const unsigned char *x)
{
check_displayid_datablock_revision(x[1]);
if (!check_displayid_datablock_length(x, 15, 15))
return;
printf(" Pixel Clock: %.3f-%.3f MHz\n",
(double)((x[3] | (x[4] << 8) | (x[5] << 16)) + 1) / 100.0,
(double)((x[6] | (x[7] << 8) | (x[8] << 16)) + 1) / 100.0);
printf(" Horizontal Frequency: %u-%u kHz\n", x[9], x[10]);
printf(" Minimum Horizontal Blanking: %u pixels\n", x[11] | (x[12] << 8));
printf(" Vertical Refresh: %u-%u Hz\n", x[13], x[14]);
printf(" Minimum Vertical Blanking: %u lines\n", x[15] | (x[16] << 8));
if (x[17] & 0x80)
printf(" Supports Interlaced\n");
if (x[17] & 0x40)
printf(" Supports CVT\n");
if (x[17] & 0x20)
printf(" Supports CVT Reduced Blanking\n");
if (x[17] & 0x10)
printf(" Discrete frequency display device\n");
}
// tag 0x0a and 0x0b
void edid_state::parse_displayid_string(const unsigned char *x)
{
check_displayid_datablock_revision(x[1]);
if (check_displayid_datablock_length(x))
printf(" Text: '%s'\n", extract_string(x + 3, x[2], true));
}
// tag 0x0c
void edid_state::parse_displayid_display_device(const unsigned char *x)
{
check_displayid_datablock_revision(x[1]);
if (!check_displayid_datablock_length(x, 13, 13))
return;
printf(" Display Device Technology: ");
switch (x[3]) {
case 0x00: printf("Monochrome CRT\n"); break;
case 0x01: printf("Standard tricolor CRT\n"); break;
case 0x02: printf("Other/undefined CRT\n"); break;
case 0x10: printf("Passive matrix TN\n"); break;
case 0x11: printf("Passive matrix cholesteric LC\n"); break;
case 0x12: printf("Passive matrix ferroelectric LC\n"); break;
case 0x13: printf("Other passive matrix LC type\n"); break;
case 0x14: printf("Active-matrix TN\n"); break;
case 0x15: printf("Active-matrix IPS (all types)\n"); break;
case 0x16: printf("Active-matrix VA (all types)\n"); break;
case 0x17: printf("Active-matrix OCB\n"); break;
case 0x18: printf("Active-matrix ferroelectric\n"); break;
case 0x1f: printf("Other LC type\n"); break;
case 0x20: printf("DC plasma\n"); break;
case 0x21: printf("AC plasma\n"); break;
}
switch (x[3] & 0xf0) {
case 0x30: printf("Electroluminescent, except OEL/OLED\n"); break;
case 0x40: printf("Inorganic LED\n"); break;
case 0x50: printf("Organic LED/OEL\n"); break;
case 0x60: printf("FED or sim. \"cold-cathode,\" phosphor-based types\n"); break;
case 0x70: printf("Electrophoretic\n"); break;
case 0x80: printf("Electrochromic\n"); break;
case 0x90: printf("Electromechanical\n"); break;
case 0xa0: printf("Electrowetting\n"); break;
case 0xf0: printf("Other type not defined here\n"); break;
}
printf(" Display operating mode: ");
switch (x[4] >> 4) {
case 0x00: printf("Direct-view reflective, ambient light\n"); break;
case 0x01: printf("Direct-view reflective, ambient light, also has light source\n"); break;
case 0x02: printf("Direct-view reflective, uses light source\n"); break;
case 0x03: printf("Direct-view transmissive, ambient light\n"); break;
case 0x04: printf("Direct-view transmissive, ambient light, also has light source\n"); break;
case 0x05: printf("Direct-view transmissive, uses light source\n"); break;
case 0x06: printf("Direct-view emissive\n"); break;
case 0x07: printf("Direct-view transflective, backlight off by default\n"); break;
case 0x08: printf("Direct-view transflective, backlight on by default\n"); break;
case 0x09: printf("Transparent display, ambient light\n"); break;
case 0x0a: printf("Transparent emissive display\n"); break;
case 0x0b: printf("Projection device using reflective light modulator\n"); break;
case 0x0c: printf("Projection device using transmissive light modulator\n"); break;
case 0x0d: printf("Projection device using emissive image transducer\n"); break;
default: printf("Reserved\n"); break;
}
if (x[4] & 0x08)
printf(" The backlight may be switched on and off\n");
if (x[4] & 0x04)
printf(" The backlight's intensity can be controlled\n");
unsigned w = x[5] | (x[6] << 8);
unsigned h = x[7] | (x[8] << 8);
if (w) w++;
if (h) h++;
printf(" Display native pixel format: %ux%u\n", w, h);
set_displayid_native_res(w, h);
printf(" Aspect ratio and orientation:\n");
printf(" Aspect Ratio: %.2f\n", (100 + x[9]) / 100.0);
unsigned char v = x[0x0a];
printf(" Default Orientation: ");
switch ((v & 0xc0) >> 6) {
case 0x00: printf("Landscape\n"); break;
case 0x01: printf("Portrait\n"); break;
case 0x02: printf("Not Fixed\n"); break;
case 0x03: printf("Undefined\n"); break;
}
printf(" Rotation Capability: ");
switch ((v & 0x30) >> 4) {
case 0x00: printf("None\n"); break;
case 0x01: printf("Can rotate 90 degrees clockwise\n"); break;
case 0x02: printf("Can rotate 90 degrees counterclockwise\n"); break;
case 0x03: printf("Can rotate 90 degrees in either direction)\n"); break;
}
printf(" Zero Pixel Location: ");
switch ((v & 0x0c) >> 2) {
case 0x00: printf("Upper Left\n"); break;
case 0x01: printf("Upper Right\n"); break;
case 0x02: printf("Lower Left\n"); break;
case 0x03: printf("Lower Right\n"); break;
}
printf(" Scan Direction: ");
switch (v & 0x03) {
case 0x00: printf("Not defined\n"); break;
case 0x01: printf("Fast Scan is on the Major (Long) Axis and Slow Scan is on the Minor Axis\n"); break;
case 0x02: printf("Fast Scan is on the Minor (Short) Axis and Slow Scan is on the Major Axis\n"); break;
case 0x03: printf("Reserved\n");
fail("Scan Direction used the reserved value 0x03.\n");
break;
}
printf(" Sub-pixel layout/configuration/shape: ");
switch (x[0x0b]) {
case 0x00: printf("Not defined\n"); break;
case 0x01: printf("RGB vertical stripes\n"); break;
case 0x02: printf("RGB horizontal stripes\n"); break;
case 0x03: printf("Vertical stripes using primary order\n"); break;
case 0x04: printf("Horizontal stripes using primary order\n"); break;
case 0x05: printf("Quad sub-pixels, red at top left\n"); break;
case 0x06: printf("Quad sub-pixels, red at bottom left\n"); break;
case 0x07: printf("Delta (triad) RGB sub-pixels\n"); break;
case 0x08: printf("Mosaic\n"); break;
case 0x09: printf("Quad sub-pixels, RGB + 1 additional color\n"); break;
case 0x0a: printf("Five sub-pixels, RGB + 2 additional colors\n"); break;
case 0x0b: printf("Six sub-pixels, RGB + 3 additional colors\n"); break;
case 0x0c: printf("Clairvoyante, Inc. PenTile Matrix (tm) layout\n"); break;
default: printf("Reserved\n"); break;
}
printf(" Horizontal and vertical dot/pixel pitch: %.2fx%.2f mm\n",
(double)(x[0x0c]) / 100.0, (double)(x[0x0d]) / 100.0);
printf(" Color bit depth: %u\n", x[0x0e] & 0x0f);
v = x[0x0f];
printf(" Response time for %s transition: %u ms\n",
(v & 0x80) ? "white-to-black" : "black-to-white", v & 0x7f);
}
// tag 0x0d
void edid_state::parse_displayid_intf_power_sequencing(const unsigned char *x)
{
check_displayid_datablock_revision(x[1]);
if (!check_displayid_datablock_length(x, 6, 6))
return;
printf(" Power Sequence T1 Range: %.1f-%u.0 ms\n", (x[3] >> 4) / 10.0, (x[3] & 0xf) * 2);
printf(" Power Sequence T2 Range: 0.0-%u.0 ms\n", (x[4] & 0x3f) * 2);
printf(" Power Sequence T3 Range: 0.0-%u.0 ms\n", (x[5] & 0x3f) * 2);
printf(" Power Sequence T4 Min: %u.0 ms\n", (x[6] & 0x7f) * 10);
printf(" Power Sequence T5 Min: %u.0 ms\n", (x[7] & 0x3f) * 10);
printf(" Power Sequence T6 Min: %u.0 ms\n", (x[8] & 0x3f) * 10);
}
// tag 0x0e
void edid_state::parse_displayid_transfer_characteristics(const unsigned char *x)
{
check_displayid_datablock_revision(x[1], 0xf0, 1);
unsigned xfer_id = x[1] >> 4;
bool first_is_white = x[3] & 0x80;
bool four_param = x[3] & 0x20;
if (xfer_id) {
printf(" Transfer Characteristics Data Block Identifier: %u\n", xfer_id);
if (!(dispid.preparsed_color_ids & (1 << xfer_id)))
fail("Missing Color Characteristics Data Block using Identifier %u.\n", xfer_id);
}
if (first_is_white)
printf(" The first curve is the 'white' transfer characteristic\n");
if (x[3] & 0x40)
printf(" Individual response curves\n");
unsigned offset = 4;
unsigned len = x[2] - 1;
for (unsigned i = 0; len; i++) {
if ((x[3] & 0x80) && !i)
printf(" White curve: ");
else
printf(" Response curve #%u:",
i - first_is_white);
unsigned samples = x[offset];
if (four_param) {
if (samples != 5)
fail("Expected 5 samples.\n");
printf(" A0=%u A1=%u A2=%u A3=%u Gamma=%.2f\n",
x[offset + 1], x[offset + 2], x[offset + 3], x[offset + 4],
(double)(x[offset + 5] + 100.0) / 100.0);
samples++;
} else {
double sum = 0;
// The spec is not very clear about the number of samples:
// should this be interpreted as the actual number of
// samples stored in this Data Block, or as the number of
// samples in the curve, but where the last sample is not
// actually stored since it is always 0x3ff.
//
// The ATP Manager interprets this as the latter, so that's
// what we implement here.
for (unsigned j = offset + 1; j < offset + samples; j++) {
sum += x[j];
printf(" %.2f", sum * 100.0 / 1023.0);
}
printf(" 100.00\n");
}
offset += samples;
len -= samples;
}
}
// tag 0x0f
void edid_state::parse_displayid_display_intf(const unsigned char *x)
{
check_displayid_datablock_revision(x[1]);
if (!check_displayid_datablock_length(x, 10, 10))
return;
dispid.has_display_interface_features = true;
printf(" Interface Type: ");
switch (x[3] >> 4) {
case 0x00:
switch (x[3] & 0xf) {
case 0x00: printf("Analog 15HD/VGA\n"); break;
case 0x01: printf("Analog VESA NAVI-V (15HD)\n"); break;
case 0x02: printf("Analog VESA NAVI-D\n"); break;
default: printf("Reserved\n"); break;
}
break;
case 0x01: printf("LVDS\n"); break;
case 0x02: printf("TMDS\n"); break;
case 0x03: printf("RSDS\n"); break;
case 0x04: printf("DVI-D\n"); break;
case 0x05: printf("DVI-I, analog\n"); break;
case 0x06: printf("DVI-I, digital\n"); break;
case 0x07: printf("HDMI-A\n"); break;
case 0x08: printf("HDMI-B\n"); break;
case 0x09: printf("MDDI\n"); break;
case 0x0a: printf("DisplayPort\n"); break;
case 0x0b: printf("Proprietary Digital Interface\n"); break;
default: printf("Reserved\n"); break;
}
if (x[3] >> 4)
printf(" Number of Links: %u\n", x[3] & 0xf);
printf(" Interface Standard Version: %u.%u\n",
x[4] >> 4, x[4] & 0xf);
print_flags(" Supported bpc for RGB encoding", x[5], bpc444);
print_flags(" Supported bpc for YCbCr 4:4:4 encoding", x[6], bpc444);
print_flags(" Supported bpc for YCbCr 4:2:2 encoding", x[7], bpc4xx);
printf(" Supported Content Protection: ");
switch (x[8] & 0xf) {
case 0x00: printf("None\n"); break;
case 0x01: printf("HDCP "); break;
case 0x02: printf("DTCP "); break;
case 0x03: printf("DPCP "); break;
default: printf("Reserved "); break;
}
if (x[8] & 0xf)
printf("%u.%u\n", x[9] >> 4, x[9] & 0xf);
unsigned char v = x[0x0a] & 0xf;
printf(" Spread Spectrum: ");
switch (x[0x0a] >> 6) {
case 0x00: printf("None\n"); break;
case 0x01: printf("Down Spread %.1f%%\n", v / 10.0); break;
case 0x02: printf("Center Spread %.1f%%\n", v / 10.0); break;
case 0x03: printf("Reserved\n"); break;
}
switch (x[3] >> 4) {
case 0x01:
printf(" LVDS Color Mapping: %s mode\n",
(x[0x0b] & 0x10) ? "6 bit compatible" : "normal");
if (x[0x0b] & 0x08) printf(" LVDS supports 2.8V\n");
if (x[0x0b] & 0x04) printf(" LVDS supports 12V\n");
if (x[0x0b] & 0x02) printf(" LVDS supports 5V\n");
if (x[0x0b] & 0x01) printf(" LVDS supports 3.3V\n");
printf(" LVDS %s Mode\n", (x[0x0c] & 0x04) ? "Fixed" : "DE");
if (x[0x0c] & 0x04)
printf(" LVDS %s Signal Level\n", (x[0x0c] & 0x02) ? "Low" : "High");
else
printf(" LVDS DE Polarity Active %s\n", (x[0x0c] & 0x02) ? "Low" : "High");
printf(" LVDS Shift Clock Data Strobe at %s Edge\n", (x[0x0c] & 0x01) ? "Rising" : "Falling");
break;
case 0x0b:
printf(" PDI %s Mode\n", (x[0x0b] & 0x04) ? "Fixed" : "DE");
if (x[0x0b] & 0x04)
printf(" PDI %s Signal Level\n", (x[0x0b] & 0x02) ? "Low" : "High");
else
printf(" PDI DE Polarity Active %s\n", (x[0x0b] & 0x02) ? "Low" : "High");
printf(" PDI Shift Clock Data Strobe at %s Edge\n", (x[0x0b] & 0x01) ? "Rising" : "Falling");
break;
}
}
// tag 0x10 and 0x27
void edid_state::parse_displayid_stereo_display_intf(const unsigned char *x)
{
dispid.has_stereo_display_interface = true;
check_displayid_datablock_revision(x[1], 0xc0, 1);
switch (x[1] >> 6) {
case 0x00: printf(" Timings that explicitly report 3D capability\n"); break;
case 0x01: printf(" Timings that explicitly report 3D capability & Timing Codes listed here\n"); break;
case 0x02: printf(" All listed timings\n"); break;
case 0x03: printf(" Only Timings Codes listed here\n"); break;
}
unsigned len = x[2];
switch (x[4]) {
case 0x00:
printf(" Field Sequential Stereo (L/R Polarity: %s)\n",
(x[5] & 1) ? "0/1" : "1/0");
break;
case 0x01:
printf(" Side-by-side Stereo (Left Half = %s Eye View)\n",
(x[5] & 1) ? "Right" : "Left");
break;
case 0x02:
printf(" Pixel Interleaved Stereo:\n");
for (unsigned y = 0; y < 8; y++) {
unsigned char v = x[5 + y];
printf(" ");
for (int x = 7; x >= 0; x--)
printf("%c", (v & (1 << x)) ? 'L' : 'R');
printf("\n");
}
break;
case 0x03:
printf(" Dual Interface, Left and Right Separate\n");
printf(" Carries the %s-eye view\n",
(x[5] & 1) ? "Right" : "Left");
printf(" ");
switch ((x[5] >> 1) & 3) {
case 0x00: printf("No mirroring\n"); break;
case 0x01: printf("Left/Right mirroring\n"); break;
case 0x02: printf("Top/Bottom mirroring\n"); break;
case 0x03: printf("Reserved\n"); break;
}
break;
case 0x04:
printf(" Multi-View: %u views, Interleaving Method Code: %u\n",
x[5], x[6]);
break;
case 0x05:
printf(" Stacked Frame Stereo (Top Half = %s Eye View)\n",
(x[5] & 1) ? "Right" : "Left");
break;
case 0xff:
printf(" Proprietary\n");
break;
default:
printf(" Reserved\n");
break;
}
if (!(x[1] & 0x40)) // Has No Timing Codes
return;
len -= 1 + x[3];
x += 4 + x[3];
while (1U + (x[0] & 0x1f) <= len) {
unsigned num_codes = x[0] & 0x1f;
unsigned type = x[0] >> 6;
char type_name[16];
for (unsigned i = 1; i <= num_codes; i++) {
switch (type) {
case 0x00:
sprintf(type_name, "DMT 0x%02x", x[i]);
print_timings(" ", find_dmt_id(x[i]), type_name);
break;
case 0x01:
sprintf(type_name, "VIC %3u", x[i]);
print_timings(" ", find_vic_id(x[i]), type_name);
break;
case 0x02:
sprintf(type_name, "HDMI VIC %u", x[i]);
print_timings(" ", find_hdmi_vic_id(x[i]), type_name);
break;
}
}
len -= 1 + num_codes;
x += 1 + num_codes;
}
}
// tag 0x11
void edid_state::parse_displayid_type_5_timing(const unsigned char *x)
{
struct timings t = {};
std::string s("aspect ");
t.hact = 1 + (x[2] | (x[3] << 8));
t.vact = 1 + (x[4] | (x[5] << 8));
calc_ratio(&t);
s += std::to_string(t.hratio) + ":" + std::to_string(t.vratio);
switch ((x[0] >> 5) & 0x3) {
case 0:
s += ", no 3D stereo";
break;
case 1:
s += ", 3D stereo";
dispid.has_stereo = true;
break;
case 2:
s += ", 3D stereo depends on user action";
dispid.has_stereo = true;
break;
case 3:
s += ", reserved";
fail("Reserved stereo 0x03.\n");
break;
}
if (x[0] & 0x10)
s += ", refresh rate * (1000/1001) supported";
t.rb = RB_CVT_V2;
if ((x[0] & 0x03) == 1)
warn("Unexpected use of 'custom reduced blanking'.\n");
else if ((x[0] & 0x03) > 1)
fail("Invalid Timing Formula.\n");
edid_cvt_mode(1 + x[6], t);
if (x[0] & 0x80) {
s += ", preferred";
dispid.preferred_timings.push_back(timings_ext(t, "CVT", s));
}
print_timings(" ", &t, "CVT", s.c_str());
}
// tag 0x12 and 0x28
void edid_state::parse_displayid_tiled_display_topology(const unsigned char *x, bool is_v2)
{