diff options
Diffstat (limited to '3rdParty')
| -rw-r--r-- | 3rdParty/EDID/edid.cpp | 446 | ||||
| -rw-r--r-- | 3rdParty/EDID/edid.h | 174 |
2 files changed, 620 insertions, 0 deletions
diff --git a/3rdParty/EDID/edid.cpp b/3rdParty/EDID/edid.cpp new file mode 100644 index 0000000..c74def2 --- /dev/null +++ b/3rdParty/EDID/edid.cpp @@ -0,0 +1,446 @@ +/* + * Copyright 2007 Red Hat, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, and/or sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER + * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* Author: Soren Sandmann <[email protected]> */ +#include "edid.h" +#include <stdint.h> +#include <math.h> +#include <memory.h> +#include <X11/Xatom.h> + + +static int get_bit(int in, int bit) { + return (in & (1 << bit)) >> bit; +} + +static int get_bits(int in, int begin, int end) { + int mask = (1 << (end - begin + 1)) - 1; + + return (in >> begin) & mask; +} + +static bool decode_header(const uint8_t *edid) { + if (memcmp(edid, "\x00\xff\xff\xff\xff\xff\xff\x00", 8) == 0) + return true; + return false; +} + +static int decode_vendor_and_product_identification(const uint8_t *edid, MonitorInfo *info) { + + /* Manufacturer Code */ + info->manufacturer_code[0] = get_bits(edid[0x08], 2, 6); + info->manufacturer_code[1] = get_bits(edid[0x08], 0, 1) << 3; + info->manufacturer_code[1] |= get_bits(edid[0x09], 5, 7); + info->manufacturer_code[2] = get_bits(edid[0x09], 0, 4); + info->manufacturer_code[3] = '\0'; + + info->manufacturer_code[0] += 'A' - 1; + info->manufacturer_code[1] += 'A' - 1; + info->manufacturer_code[2] += 'A' - 1; + + /* Product Code */ + info->product_code = edid[0x0b] << 8 | edid[0x0a]; + + /* Serial Number */ + info->serial_number = edid[0x0c] | edid[0x0d] << 8 | edid[0x0e] << 16 | edid[0x0f] << 24; + + /* Week and Year */ + bool is_model_year = false; + switch (edid[0x10]) { + case 0x00: + info->production_week = -1; + break; + + case 0xff: + info->production_week = -1; + is_model_year = true; + break; + + default: + info->production_week = edid[0x10]; + break; + } + + if (is_model_year) { + info->production_year = -1; + info->model_year = 1990 + edid[0x11]; + } else { + info->production_year = 1990 + edid[0x11]; + info->model_year = -1; + } + + return true; +} + +static bool decode_edid_version(const uint8_t *edid, MonitorInfo *info) { + info->major_version = edid[0x12]; + info->minor_version = edid[0x13]; + return true; +} + +static bool decode_display_parameters(const uint8_t *edid, MonitorInfo *info) { + /* Digital vs Analog */ + info->is_digital = get_bit(edid[0x14], 7); + + if (info->is_digital) { + static const int bit_depth[8] = { -1, 6, 8, 10, 12, 14, 16, -1 }; + static const Interface interfaces[6] = { UNDEFINED, DVI, HDMI_A, HDMI_B, MDDI, DISPLAY_PORT }; + + int bits = get_bits(edid[0x14], 4, 6); + info->connector.digital.bits_per_primary = bit_depth[bits]; + + bits = get_bits(edid[0x14], 0, 3); + if (bits <= 5) + info->connector.digital.interface = interfaces[bits]; + else + info->connector.digital.interface = UNDEFINED; + } else { + int bits = get_bits(edid[0x14], 5, 6); + static const double levels[][3] = { // + { 0.7, 0.3, 1.0 }, // + { 0.714, 0.286, 1.0 }, // + { 1.0, 0.4, 1.4 }, // + { 0.7, 0.0, 0.7 }, // + }; + + info->connector.analog.video_signal_level = levels[bits][0]; + info->connector.analog.sync_signal_level = levels[bits][1]; + info->connector.analog.total_signal_level = levels[bits][2]; + info->connector.analog.blank_to_black = get_bit(edid[0x14], 4); + info->connector.analog.separate_hv_sync = get_bit(edid[0x14], 3); + info->connector.analog.composite_sync_on_h = get_bit(edid[0x14], 2); + info->connector.analog.composite_sync_on_green = get_bit(edid[0x14], 1); + info->connector.analog.serration_on_vsync = get_bit(edid[0x14], 0); + } + + /* Screen Size / Aspect Ratio */ + if (edid[0x15] == 0 && edid[0x16] == 0) { + info->width_mm = -1; + info->height_mm = -1; + info->aspect_ratio = -1.0; + } else if (edid[0x16] == 0) { + info->width_mm = -1; + info->height_mm = -1; + info->aspect_ratio = 100.0 / (edid[0x15] + 99); + } else if (edid[0x15] == 0) { + info->width_mm = -1; + info->height_mm = -1; + info->aspect_ratio = 100.0 / (edid[0x16] + 99); + info->aspect_ratio = 1 / info->aspect_ratio; /* portrait */ + } else { + info->width_mm = 10 * edid[0x15]; + info->height_mm = 10 * edid[0x16]; + } + + /* Gamma */ + if (edid[0x17] == 0xFF) + info->gamma = -1.0; + else + info->gamma = (edid[0x17] + 100.0) / 100.0; + + /* Features */ + info->standby = get_bit(edid[0x18], 7); + info->suspend = get_bit(edid[0x18], 6); + info->active_off = get_bit(edid[0x18], 5); + + if (info->is_digital) { + info->connector.digital.rgb444 = 1; + if (get_bit(edid[0x18], 3)) + info->connector.digital.ycrcb444 = 1; + if (get_bit(edid[0x18], 4)) + info->connector.digital.ycrcb422 = 1; + } else { + int bits = get_bits(edid[0x18], 3, 4); + ColorType color_type[4] = { MONOCHROME, RGB, OTHER_COLOR, UNDEFINED_COLOR }; + + info->connector.analog.color_type = color_type[bits]; + } + + info->srgb_is_standard = get_bit(edid[0x18], 2); + + /* In 1.3 this is called "has preferred timing" */ + info->preferred_timing_includes_native = get_bit(edid[0x18], 1); + + /* FIXME: In 1.3 this indicates whether the monitor accepts GTF */ + info->continuous_frequency = get_bit(edid[0x18], 0); + return true; +} + +static double decode_fraction(int high, int low) { + double result = 0.0; + high = (high << 2) | low; + for (int i = 0; i < 10; ++i) + result += get_bit(high, i) * pow(2, i - 10); + return result; +} + +static bool decode_color_characteristics(const uint8_t *edid, MonitorInfo *info) { + info->red_x = decode_fraction(edid[0x1b], get_bits(edid[0x19], 6, 7)); + info->red_y = decode_fraction(edid[0x1c], get_bits(edid[0x19], 5, 4)); + info->green_x = decode_fraction(edid[0x1d], get_bits(edid[0x19], 2, 3)); + info->green_y = decode_fraction(edid[0x1e], get_bits(edid[0x19], 0, 1)); + info->blue_x = decode_fraction(edid[0x1f], get_bits(edid[0x1a], 6, 7)); + info->blue_y = decode_fraction(edid[0x20], get_bits(edid[0x1a], 4, 5)); + info->white_x = decode_fraction(edid[0x21], get_bits(edid[0x1a], 2, 3)); + info->white_y = decode_fraction(edid[0x22], get_bits(edid[0x1a], 0, 1)); + + return true; +} + +static bool decode_established_timings(const uint8_t *edid, MonitorInfo *info) { + static const Timing established[][8] = { // + { { 800, 600, 60 }, { 800, 600, 56 }, // + { 640, 480, 75 }, { 640, 480, 72 }, // + { 640, 480, 67 }, { 640, 480, 60 }, // + { 720, 400, 88 }, { 720, 400, 70 } }, // + { { 1280, 1024, 75 }, { 1024, 768, 75 }, // + { 1024, 768, 70 }, { 1024, 768, 60 }, // + { 1024, 768, 87 }, { 832, 624, 75 }, // + { 800, 600, 75 }, { 800, 600, 72 } }, // + { { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, // + { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 1152, 870, 75 } }, // + }; + + int idx = 0; + for (int i = 0; i < 3; ++i) { + for (int j = 0; j < 8; ++j) { + int byte = edid[0x23 + i]; + + if (get_bit(byte, j) && established[i][j].frequency != 0) + info->established[idx++] = established[i][j]; + } + } + return true; +} + +static bool decode_standard_timings(const uint8_t *edid, MonitorInfo *info) { + int i; + + for (i = 0; i < 8; i++) { + int first = edid[0x26 + 2 * i]; + int second = edid[0x27 + 2 * i]; + + if (first != 0x01 && second != 0x01) { + int w = 8 * (first + 31); + int h = 0; + + switch (get_bits(second, 6, 7)) { + case 0x00: + h = (w / 16) * 10; + break; + case 0x01: + h = (w / 4) * 3; + break; + case 0x02: + h = (w / 5) * 4; + break; + case 0x03: + h = (w / 16) * 9; + break; + } + + info->standard[i].width = w; + info->standard[i].height = h; + info->standard[i].frequency = get_bits(second, 0, 5) + 60; + } + } + + return true; +} + +static void decode_lf_string(const uint8_t *s, int n_chars, char *result) { + int i; + for (i = 0; i < n_chars; ++i) { + if (s[i] == 0x0a) { + *result++ = '\0'; + break; + } else if (s[i] == 0x00) { + /* Convert embedded 0's to spaces */ + *result++ = ' '; + } else { + *result++ = s[i]; + } + } +} + +static void decode_display_descriptor(const uint8_t *desc, MonitorInfo *info) { + switch (desc[0x03]) { + case 0xFC: + decode_lf_string(desc + 5, 13, info->dsc_product_name); + break; + case 0xFF: + decode_lf_string(desc + 5, 13, info->dsc_serial_number); + break; + case 0xFE: + decode_lf_string(desc + 5, 13, info->dsc_string); + break; + case 0xFD: + /* Range Limits */ + break; + case 0xFB: + /* Color Point */ + break; + case 0xFA: + /* Timing Identifications */ + break; + case 0xF9: + /* Color Management */ + break; + case 0xF8: + /* Timing Codes */ + break; + case 0xF7: + /* Established Timings */ + break; + case 0x10: + break; + } +} + +static void decode_detailed_timing(const uint8_t *timing, DetailedTiming *detailed) { + int bits; + StereoType stereo[] = { // + NO_STEREO, NO_STEREO, // + FIELD_RIGHT, FIELD_LEFT, // + TWO_WAY_RIGHT_ON_EVEN, TWO_WAY_LEFT_ON_EVEN, // + FOUR_WAY_INTERLEAVED, // + SIDE_BY_SIDE // + }; + + detailed->pixel_clock = (timing[0x00] | timing[0x01] << 8) * 10000; + detailed->h_addr = timing[0x02] | ((timing[0x04] & 0xf0) << 4); + detailed->h_blank = timing[0x03] | ((timing[0x04] & 0x0f) << 8); + detailed->v_addr = timing[0x05] | ((timing[0x07] & 0xf0) << 4); + detailed->v_blank = timing[0x06] | ((timing[0x07] & 0x0f) << 8); + detailed->h_front_porch = timing[0x08] | get_bits(timing[0x0b], 6, 7) << 8; + detailed->h_sync = timing[0x09] | get_bits(timing[0x0b], 4, 5) << 8; + detailed->v_front_porch = get_bits(timing[0x0a], 4, 7) | get_bits(timing[0x0b], 2, 3) << 4; + detailed->v_sync = get_bits(timing[0x0a], 0, 3) | get_bits(timing[0x0b], 0, 1) << 4; + detailed->width_mm = timing[0x0c] | get_bits(timing[0x0e], 4, 7) << 8; + detailed->height_mm = timing[0x0d] | get_bits(timing[0x0e], 0, 3) << 8; + detailed->right_border = timing[0x0f]; + detailed->top_border = timing[0x10]; + detailed->interlaced = get_bit(timing[0x11], 7); + + /* Stereo */ + bits = get_bits(timing[0x11], 5, 6) << 1 | get_bit(timing[0x11], 0); + detailed->stereo = stereo[bits]; + + /* Sync */ + bits = timing[0x11]; + + detailed->digital_sync = get_bit(bits, 4); + if (detailed->digital_sync) { + detailed->connector.digital.composite = !get_bit(bits, 3); + if (detailed->connector.digital.composite) { + detailed->connector.digital.serrations = get_bit(bits, 2); + detailed->connector.digital.negative_vsync = 0; + } else { + detailed->connector.digital.serrations = 0; + detailed->connector.digital.negative_vsync = !get_bit(bits, 2); + } + detailed->connector.digital.negative_hsync = !get_bit(bits, 0); + } else { + detailed->connector.analog.bipolar = get_bit(bits, 3); + detailed->connector.analog.serrations = get_bit(bits, 2); + detailed->connector.analog.sync_on_green = !get_bit(bits, 1); + } +} + +static bool decode_descriptors(const uint8_t *edid, MonitorInfo *info) { + int timing_idx = 0; + for (int i = 0; i < 4; ++i) { + int index = 0x36 + i * 18; + if (edid[index + 0] == 0x00 && edid[index + 1] == 0x00) { + decode_display_descriptor(edid + index, info); + } else { + decode_detailed_timing(edid + index, &(info->detailed_timings[timing_idx++])); + } + } + info->n_detailed_timings = timing_idx; + return true; +} + +static void decode_check_sum(const uint8_t *edid, MonitorInfo *info) { + uint8_t check = 0; + for (int i = 0; i < 128; ++i) + check += edid[i]; + info->checksum = check; +} + +MonitorInfo * decode_edid(const uint8_t *edid) { + MonitorInfo *info = new MonitorInfo(); + decode_check_sum(edid, info); + if (decode_header(edid) && // + decode_vendor_and_product_identification(edid, info) && // + decode_edid_version(edid, info) && // + decode_display_parameters(edid, info) && // + decode_color_characteristics(edid, info) && // + decode_established_timings(edid, info) && // + decode_standard_timings(edid, info) && // + decode_descriptors(edid, info)) { + return info; + } else { + delete info; + return 0; + } +} + +static uint8_t * get_property(Display *dpy, RROutput output, Atom atom, int *len) { + unsigned char *prop; + int actual_format; + unsigned long nitems, bytes_after; + Atom actual_type; + uint8_t *result = NULL; + + XRRGetOutputProperty(dpy, output, atom, 0, 100, False, False, + AnyPropertyType, &actual_type, &actual_format, &nitems, &bytes_after, &prop); + + if (actual_type == XA_INTEGER && actual_format == 8) { + result = new uint8_t[nitems]; + memcpy(result, prop, nitems); + if (len) + *len = nitems; + } + XFree(prop); + return result; +} + +MonitorInfo * read_edid_data(Display * disp, RROutput id) { + int len; + Atom edid_atom = XInternAtom(disp, "EDID", false); + uint8_t *edid = get_property(disp, id, edid_atom, &len); + if (!edid) { + edid_atom = XInternAtom(disp, "EDID_DATA", false); + edid = get_property(disp, id, edid_atom, &len); + } + + MonitorInfo * result = 0; + if (edid) { + if (len % 128 == 0) { + result = decode_edid(edid); + } + delete[] edid; + } + + return result; +} diff --git a/3rdParty/EDID/edid.h b/3rdParty/EDID/edid.h new file mode 100644 index 0000000..2d6cb20 --- /dev/null +++ b/3rdParty/EDID/edid.h @@ -0,0 +1,174 @@ +#include <X11/extensions/Xrandr.h> +#include <X11/Xlib.h> + +/* + * Copyright 2007 Red Hat, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, and/or sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER + * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/* Author: Soren Sandmann <[email protected]> */ + +typedef enum { + UNDEFINED, + DVI, + HDMI_A, + HDMI_B, + MDDI, + DISPLAY_PORT +} Interface; + +typedef enum { + UNDEFINED_COLOR, + MONOCHROME, + RGB, + OTHER_COLOR +} ColorType; + +typedef enum { + NO_STEREO, + FIELD_RIGHT, + FIELD_LEFT, + TWO_WAY_RIGHT_ON_EVEN, + TWO_WAY_LEFT_ON_EVEN, + FOUR_WAY_INTERLEAVED, + SIDE_BY_SIDE +} StereoType; + +struct Timing { + int width; + int height; + int frequency; +}; + +struct DetailedTiming { + int pixel_clock; + int h_addr; + int h_blank; + int h_sync; + int h_front_porch; + int v_addr; + int v_blank; + int v_sync; + int v_front_porch; + int width_mm; + int height_mm; + int right_border; + int top_border; + int interlaced; + StereoType stereo; + + int digital_sync; + union { + struct { + int bipolar; + int serrations; + int sync_on_green; + } analog; + + struct { + int composite; + int serrations; + int negative_vsync; + int negative_hsync; + } digital; + } connector; +}; + +struct MonitorInfo { + int checksum; + char manufacturer_code[4]; + int product_code; + unsigned int serial_number; + + int production_week; /* -1 if not specified */ + int production_year; /* -1 if not specified */ + int model_year; /* -1 if not specified */ + + int major_version; + int minor_version; + + int is_digital; + + union { + struct { + int bits_per_primary; + Interface interface; + int rgb444; + int ycrcb444; + int ycrcb422; + } digital; + + struct { + double video_signal_level; + double sync_signal_level; + double total_signal_level; + + int blank_to_black; + + int separate_hv_sync; + int composite_sync_on_h; + int composite_sync_on_green; + int serration_on_vsync; + ColorType color_type; + } analog; + } connector; + + int width_mm; /* -1 if not specified */ + int height_mm; /* -1 if not specified */ + double aspect_ratio; /* -1.0 if not specififed */ + + double gamma; /* -1.0 if not specified */ + + int standby; + int suspend; + int active_off; + + int srgb_is_standard; + int preferred_timing_includes_native; + int continuous_frequency; + + double red_x; + double red_y; + double green_x; + double green_y; + double blue_x; + double blue_y; + double white_x; + double white_y; + + Timing established[24]; /* Terminated by 0x0x0 */ + Timing standard[8]; + + int n_detailed_timings; + DetailedTiming detailed_timings[4]; /* If monitor has a preferred + * mode, it is the first one + * (whether it has, is + * determined by the + * preferred_timing_includes + * bit. + */ + + /* Optional product description */ + char dsc_serial_number[14]; + char dsc_product_name[14]; + char dsc_string[14]; /* Unspecified ASCII data */ +}; + +MonitorInfo * read_edid_data(Display * disp, RROutput id); |