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Diffstat (limited to 'src/test/crtcinfo.c')
| -rw-r--r-- | src/test/crtcinfo.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/src/test/crtcinfo.c b/src/test/crtcinfo.c new file mode 100644 index 0000000..54f2760 --- /dev/null +++ b/src/test/crtcinfo.c @@ -0,0 +1,235 @@ +/** + * libgamma -- Display server abstraction layer for gamma ramp adjustments + * Copyright (C) 2014 Mattias Andrée (maandree@member.fsf.org) + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ +#include "crtcinfo.h" + +#include <stdio.h> +#include <stdlib.h> + + +/** + * Conditionally print a CRTC information field. + * + * @param type:data-type Data type for the value of the information field. + * @param notation:string-literal %-pattern for `printf` (excluding the %) that is used for `type`. + * @param do_print Whether the information should be included in the process's output. + * @param description A description of the information field. + * @param error The error of the information field. + * @param value The value of the information field. + */ +#define print_crtc_information_(type, notation) \ + static void print_crtc_information_##type(int do_print, const char* description, int error, type value) \ + { \ + char buf[256]; \ + if (do_print) \ + { \ + if (error) \ + { \ + snprintf(buf, sizeof(buf) / sizeof(char), " (error) %s", description); \ + libgamma_perror(buf, error); \ + } \ + else \ + printf(" %s: %" notation "\n", description, value); \ + } \ + } + + +/** + * A single [a-z] word alternative to `const char*`, we need it for the + * function name of the string variant of `print_crtc_information_*`. + */ +typedef const char* str; +/* Create `print_crtc_information_*` variants. */ +print_crtc_information_(size_t, "lu") +print_crtc_information_(signed, "i") +print_crtc_information_(int, "i") +#ifdef __GCC__ +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wdouble-promotion" +#endif +print_crtc_information_(float, "f") +#ifdef __GCC__ +# pragma GCC diagnostic pop +#endif +print_crtc_information_(str, "s") +#undef print_crtc_information_ + + +#define __case(VALUE) case VALUE: return #VALUE; + +/** + * Get a string representation of a subpixel order. + * + * @param value The subpixel order. + * @return String representation. + */ +static const char* subpixel_order_str(libgamma_subpixel_order_t value) +{ + switch (value) + { + __case (LIBGAMMA_SUBPIXEL_ORDER_UNKNOWN) + __case (LIBGAMMA_SUBPIXEL_ORDER_NONE) + __case (LIBGAMMA_SUBPIXEL_ORDER_HORIZONTAL_RGB) + __case (LIBGAMMA_SUBPIXEL_ORDER_HORIZONTAL_BGR) + __case (LIBGAMMA_SUBPIXEL_ORDER_VERTICAL_RGB) + __case (LIBGAMMA_SUBPIXEL_ORDER_VERTICAL_BGR) + default: + return "(unknown)"; + } +} + + +/** + * Get a string representation of a connector type. + * + * @param value The connector type. + * @return String representation. + */ +static const char* connector_type_str(libgamma_connector_type_t value) +{ + switch (value) + { + __case (LIBGAMMA_CONNECTOR_TYPE_Unknown) + __case (LIBGAMMA_CONNECTOR_TYPE_VGA) + __case (LIBGAMMA_CONNECTOR_TYPE_DVI) + __case (LIBGAMMA_CONNECTOR_TYPE_DVII) + __case (LIBGAMMA_CONNECTOR_TYPE_DVID) + __case (LIBGAMMA_CONNECTOR_TYPE_DVIA) + __case (LIBGAMMA_CONNECTOR_TYPE_Composite) + __case (LIBGAMMA_CONNECTOR_TYPE_SVIDEO) + __case (LIBGAMMA_CONNECTOR_TYPE_LVDS) + __case (LIBGAMMA_CONNECTOR_TYPE_Component) + __case (LIBGAMMA_CONNECTOR_TYPE_9PinDIN) + __case (LIBGAMMA_CONNECTOR_TYPE_DisplayPort) + __case (LIBGAMMA_CONNECTOR_TYPE_HDMI) + __case (LIBGAMMA_CONNECTOR_TYPE_HDMIA) + __case (LIBGAMMA_CONNECTOR_TYPE_HDMIB) + __case (LIBGAMMA_CONNECTOR_TYPE_TV) + __case (LIBGAMMA_CONNECTOR_TYPE_eDP) + __case (LIBGAMMA_CONNECTOR_TYPE_VIRTUAL) + __case (LIBGAMMA_CONNECTOR_TYPE_DSI) + __case (LIBGAMMA_CONNECTOR_TYPE_LFP) + default: + return "(unknown)"; + } +} + +#undef __case + + +/** + * The CRTC information for a CRTC. + * + * @param crtc The CRTC. + */ +void crtc_information(libgamma_crtc_state_t* restrict crtc) +{ + libgamma_method_capabilities_t caps; + libgamma_crtc_information_t info; + int fields; + int field; + + /* Get supported CRTC informations fields. */ + libgamma_method_capabilities(&caps, crtc->partition->site->method); + + /* List unsupport information fields by testing them one by one. */ + for (fields = caps.crtc_information; field = fields & -fields, fields; fields ^= field) + { + if (libgamma_get_crtc_information(&info, crtc, field)) + printf("Could not read CRTC information field %i\n", field); + free(info.edid); + free(info.connector_name); + } + + /* Get CRTC information, that is supported. */ + fields = caps.crtc_information; + if (libgamma_get_crtc_information(&info, crtc, fields)) + printf("An error occurred while reading CRTC information\n"); + + /* Macros for printing CRTC information. */ +#define print2(TYPE, FIELD_ID, DESCRIPTION, FIELD_VAR, ERROR_VAR) \ + print_crtc_information_##TYPE(fields & FIELD_ID, DESCRIPTION, info.ERROR_VAR, info.FIELD_VAR); +#define print(TYPE, FIELD_ID, DESCRIPTION, FIELD_VAR) \ + print2(TYPE, FIELD_ID, DESCRIPTION, FIELD_VAR, FIELD_VAR##_error); + + + /* Print CRTC information. */ + + printf("CRTC information:\n"); + + /* Print the EDID field. */ + if ((fields & LIBGAMMA_CRTC_INFO_EDID)) + { + if (info.edid_error) + libgamma_perror(" (error) EDID", info.edid_error); + else + { + char* edid_lc = libgamma_behex_edid(info.edid, info.edid_length); + unsigned char* edid_raw = libgamma_unhex_edid(edid_lc); + char* edid_uc = libgamma_behex_edid_uppercase(edid_raw, info.edid_length);; + printf(" EDID: %s\n", edid_lc); + printf(" EDID (uppercase): %s\n", edid_uc); + printf(" EDID (length): %lu\n", info.edid_length); + free(edid_lc); + free(edid_raw); + free(edid_uc); + } + } + /* Print physical dimensions of the monitor. */ + print(size_t, LIBGAMMA_CRTC_INFO_WIDTH_MM, "width", width_mm); + print(size_t, LIBGAMMA_CRTC_INFO_HEIGHT_MM, "height", height_mm); + print(size_t, LIBGAMMA_CRTC_INFO_WIDTH_MM_EDID, "width per EDID", width_mm_edid); + print(size_t, LIBGAMMA_CRTC_INFO_HEIGHT_MM_EDID, "height per EDID", height_mm_edid); + /* Print gamma ramp information. */ + print2(size_t, LIBGAMMA_CRTC_INFO_GAMMA_SIZE, "red gamma ramp size", red_gamma_size, gamma_size_error); + print2(size_t, LIBGAMMA_CRTC_INFO_GAMMA_SIZE, "green gamma ramp size", green_gamma_size, gamma_size_error); + print2(size_t, LIBGAMMA_CRTC_INFO_GAMMA_SIZE, "blue gamma ramp size", blue_gamma_size, gamma_size_error); + print(signed, LIBGAMMA_CRTC_INFO_GAMMA_DEPTH, "gamma ramp depth", gamma_depth); + print(int, LIBGAMMA_CRTC_INFO_GAMMA_SUPPORT, "gamma support", gamma_support); + /* Print subpixel order for the monitor. */ + if ((fields & LIBGAMMA_CRTC_INFO_SUBPIXEL_ORDER)) + { + if (info.subpixel_order_error) + libgamma_perror(" (error) subpixel order", info.subpixel_order_error); + else + printf(" subpixel order: %s\n", subpixel_order_str(info.subpixel_order)); + } + /* Print connector information. */ + print(int, LIBGAMMA_CRTC_INFO_ACTIVE, "active", active); + print(str, LIBGAMMA_CRTC_INFO_CONNECTOR_NAME, "connector name", connector_name); + if ((fields & LIBGAMMA_CRTC_INFO_CONNECTOR_TYPE)) + { + if (info.connector_type_error) + libgamma_perror(" (error) subpixel order", info.connector_type_error); + else + printf(" subpixel order: %s\n", connector_type_str(info.connector_type)); + } + /* Print the gamma characteristics of the monitor. */ + print2(float, LIBGAMMA_CRTC_INFO_GAMMA, "red gamma characteristics", gamma_red, gamma_error); + print2(float, LIBGAMMA_CRTC_INFO_GAMMA, "green gamma characteristics", gamma_green, gamma_error); + print2(float, LIBGAMMA_CRTC_INFO_GAMMA, "blue gamma characteristics", gamma_blue, gamma_error); + printf("\n"); + + +#undef print +#undef print2 + + /* Release resouces. */ + free(info.edid); + free(info.connector_name); +} + |