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Diffstat (limited to 'src/lib/libgamma-facade.c.gpp')
| -rw-r--r-- | src/lib/libgamma-facade.c.gpp | 1097 |
1 files changed, 0 insertions, 1097 deletions
diff --git a/src/lib/libgamma-facade.c.gpp b/src/lib/libgamma-facade.c.gpp deleted file mode 100644 index 9f90ed6..0000000 --- a/src/lib/libgamma-facade.c.gpp +++ /dev/null @@ -1,1097 +0,0 @@ -/* -*- c -*- */ -/* See LICENSE file for copyright and license details. */ -#include "libgamma-facade.h" - -#include "libgamma-error.h" -#include "libgamma-method.h" -#include "gamma-helper.h" - - -/* Initialise the general preprocessor */ -$>cd src/extract -$>export PATH=".:${PATH}" - -/* Some general preprocessor we will use frequently */ -$< -get-methods () -{ - ./libgamma-method-extract --list --method | cut -d _ -f 1,2 --complement -} -lowercase () -{ - echo "$*" | sed -e y/QWERTYUIOPASDFGHJKLZXCVBNM/qwertyuiopasdfghjklzxcvbnm/ | sed -e s:core_graphics:cg:g -} -$> - -/* Include all adjustment methods that are enabled at compile-time. */ -$>for method in $(get-methods); do -#ifdef HAVE_LIBGAMMA_METHOD_${method} -# include "gamma-$(lowercase $method | sed -e s:_:-:g).h" -# ifndef HAVE_LIBGAMMA_METHODS -# define HAVE_LIBGAMMA_METHODS -# endif -#endif -$>done - -#include <unistd.h> -#include <stddef.h> -#include <stdint.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> - - -/* Some things to reduce warnings when we do - * not have any adjustment methods enabled */ -#ifndef HAVE_LIBGAMMA_METHODS -# define HAVE_NO_LIBGAMMA_METHODS -# ifdef __GNUC__ -# pragma GCC diagnostic push -# pragma GCC diagnostic ignored "-Wsuggest-attribute=const" -# endif -#endif - - - -#ifdef HAVE_LIBGAMMA_METHODS -# ifdef HAVE_LIBGAMMA_METHOD_LINUX_DRM -/** - * Test whether a file descriptor refers to a VT - * - * @param fd The file descriptor - * @return Whether the file descriptor refers to a VT - */ -static int -libgamma_is_vt_proper(int fd) -{ - char buf[32], digit0; - - /* Get TTY */ - if (ttyname_r(fd, buf, sizeof(buf) / sizeof(char))) - return 0; - - /* Validate TTY path */ - if (!strcmp(buf, "/dev/console")) - return 1; - if (strstr(buf, "/dev/tty") != buf) - return 0; - - /* Validate TTY name */ - digit0 = buf[strlen("/dev/tty")]; - return '1' <= digit0 && digit0 <= '9'; -} -# endif - - -/** - * Test the availability of an adjustment method - * - * @param method The adjustment method - * @param operation Allowed values: - * 0: Pass if the environment suggests it will work but is not fake - * 1: Pass if the environment suggests it will work - * 2: Pass if real and not fake - * 3: Pass if real - * 4: Always pass - * Other values invoke undefined behaviour - * @return Whether the test passed - */ -static int -libgamma_list_method_test(int method, int operation) -{ - libgamma_method_capabilities_t caps; - libgamma_method_capabilities(&caps, method); - - switch (operation) { - case 0: - /* Methods that the environment suggests will work, excluding fake */ - if (caps.fake) - return 0; - /* fall through */ - - case 1: - /* Methods that the environment suggests will work, including fake */ - if (!caps.real) - return 0; -#ifdef HAVE_LIBGAMMA_METHOD_LINUX_DRM - if (method == LIBGAMMA_METHOD_LINUX_DRM) { - return libgamma_is_vt_proper(STDIN_FILENO) || - libgamma_is_vt_proper(STDOUT_FILENO) || - libgamma_is_vt_proper(STDERR_FILENO); - } -#endif -#ifdef HAVE_LIBGAMMA_METHOD_DUMMY - if (method == LIBGAMMA_METHOD_DUMMY) - return 0; -#endif - return caps.default_site_known; - - case 2: - /* All real non-fake methods */ - return caps.real && !caps.fake; - - case 3: - /* All real methods */ - return caps.real; - - default: - /* All methods */ - return 1; - } -} -#endif - - -/** - * List available adjustment methods by their order of preference based on the environment - * - * @param methods Output array of methods, should be able to hold `LIBGAMMA_METHOD_COUNT` elements - * @param buf_size The number of elements that fits in `methods`, it should be `LIBGAMMA_METHOD_COUNT`, - * This is used to avoid writing outside the output buffer if this library adds new - * adjustment methods without the users of the library recompiling - * @param operation Allowed values: - * 0: Methods that the environment suggests will work, excluding fake - * 1: Methods that the environment suggests will work, including fake - * 2: All real non-fake methods - * 3: All real methods - * 4: All methods - * Other values invoke undefined behaviour - * @return The number of element that have been stored in `methods`, or should - * have been stored if the buffer was large enough. - */ -size_t -libgamma_list_methods(int *restrict methods, size_t buf_size, int operation) -{ -#ifdef HAVE_NO_LIBGAMMA_METHODS - (void) methods; - (void) buf_size; - (void) operation; - return 0; -#else - size_t n = 0; - -$>for method in $(get-methods); do -#ifdef HAVE_LIBGAMMA_METHOD_${method} - if (libgamma_list_method_test(LIBGAMMA_METHOD_${method}, operation) && n++ < buf_size) - methods[n - 1] = LIBGAMMA_METHOD_${method}; -#endif -$>done - - return n; -#endif -} - - -/** - * Check whether an adjustment method is available, non-existing (invalid) methods will be - * identified as not available under the rationale that the library may be out of date - * - * @param method The adjustment method - * @return Whether the adjustment method is available - */ -int -libgamma_is_method_available(int method) -{ -#ifdef HAVE_NO_LIBGAMMA_METHODS - (void) method; - return 0; -#else - switch (method) { -$>for method in $(get-methods); do -#ifdef HAVE_LIBGAMMA_METHOD_${method} - case LIBGAMMA_METHOD_${method}: -#endif -$>done - return 1; - - default: - return 0; - } -#endif -} - - -/** - * Call the adjustment method's implementation of the called function - * - * @param 1 The adjustment method, you may use `.` instead of `->` when resolving it - * @param 2 `return` if the function returns a value, `break` otherwise - * @param 3 The base name of the function to call, that is, the name of the function - * this is expended into without the libgamma namespace prefix - * @param * The function's parameters - */ -$<switch () -$>{ - /* Read out macro's parameters */ -$<method="${1//./->}" - ctrl=$2 - fun=$3 - shift 3 - params="$*" -$>params="${params// /, }" - - switch (${method}) { -$>for adjmethod in $(get-methods); do -#ifdef HAVE_LIBGAMMA_METHOD_${adjmethod} - case LIBGAMMA_METHOD_${adjmethod}: - /* Call the adjustment method's implementation, either - * return or break after it depending on macro parameter's */ -$> if [ $ctrl = return ]; then - return - libgamma_$(lowercase $adjmethod)_${fun}(${params}); -$> elif [ ! $ctrl = return ]; then - break; -$> fi -#endif -$>done - - default: - /* If the adjustment method does not exists, either return - * that error, or do nothing because the function this is - * expanded into does return errors */ -$>if [ $ctrl = return ]; then - return LIBGAMMA_NO_SUCH_ADJUSTMENT_METHOD; -$>else - /* Method does not exists/excluded at compile-time. - * We will assume that this is not done... */ - break; -$>fi - } -$>} - - -/** - * Return the capabilities of an adjustment method - * - * @param this The data structure to fill with the method's capabilities - * @param method The adjustment method (display server and protocol) - */ -void -libgamma_method_capabilities(libgamma_method_capabilities_t *restrict this, int method) -{ - memset(this, 0, sizeof(libgamma_method_capabilities_t)); -$>switch method break method_capabilities this -} - - -/** - * Return the default site for an adjustment method - * - * @param method The adjustment method (display server and protocol) - * @return The default site, `NULL` if it cannot be determined or - * if multiple sites are not supported by the adjustment - * method; this value should not be `free`:d - */ -char * -libgamma_method_default_site(int method) -{ - const char *restrict var = libgamma_method_default_site_variable(method); - char *restrict env; - - /* Return `NULL` there is not variable to read */ - if (!var) - return NULL; - - /* Read the variable */ - env = getenv(var); - /* Return `NULL` if it does not exist (or is empty) */ - if (!env || !*env) - return NULL; - - /* Return the variable's value */ - return env; -} - - -/** - * Return the default variable that determines - * the default site for an adjustment method - * - * @param method The adjustment method (display server and protocol) - * @return The environ variables that is used to determine the - * default site. `NULL` if there is none, that is, if - * the method does not support multiple sites. - * This value should not be `free`:d. - */ -const char * -libgamma_method_default_site_variable(int method) -{ - switch (method) { -#ifdef HAVE_LIBGAMMA_METHOD_X_RANDR - case LIBGAMMA_METHOD_X_RANDR: - return "DISPLAY"; -#endif -#ifdef HAVE_LIBGAMMA_METHOD_X_VIDMODE - case LIBGAMMA_METHOD_X_VIDMODE: - return "DISPLAY"; -#endif - default: - return NULL; - } -} - - -/** - * Initialise an allocated site state - * - * @param this The site state to initialise - * @param method The adjustment method (display server and protocol) - * @param site The site identifier, unless it is `NULL` it must a - * `free`:able. Once the state is destroyed the library - * will attempt to free it. There you should not free - * it yourself, and it must not be a string constant - * or allocated on the stack. Note however that it will - * not be `free`:d if this function fails. - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -int -libgamma_site_initialise(libgamma_site_state_t *restrict this, int method, char *restrict site) -{ - this->method = method; - this->site = site; -$>switch method return site_initialise this site -} - - -/** - * Release all resources held by a site state - * - * @param this The site state - */ -void -libgamma_site_destroy(libgamma_site_state_t *restrict this) -{ -$>switch this.method break site_destroy this - free(this->site); -} - - -/** - * Release all resources held by a site state - * and free the site state pointer - * - * @param this The site state - */ -void -libgamma_site_free(libgamma_site_state_t *restrict this) -{ - libgamma_site_destroy(this); - free(this); -} - - -/** - * Restore the gamma ramps all CRTC:s with a site to the system settings - * - * @param this The site state - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -int -libgamma_site_restore(libgamma_site_state_t *restrict this) -{ -$>switch this.method return site_restore this -} - - - -/** - * Initialise an allocated partition state - * - * @param this The partition state to initialise - * @param site The site state for the site that the partition belongs to - * @param partition The index of the partition within the site - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -int -libgamma_partition_initialise(libgamma_partition_state_t *restrict this, libgamma_site_state_t *restrict site, size_t partition) -{ - this->site = site; - this->partition = partition; -$>switch site.method return partition_initialise this site partition -} - - -/** - * Release all resources held by a partition state - * - * @param this The partition state - */ -void -libgamma_partition_destroy(libgamma_partition_state_t *restrict this) -{ -$>switch this.site.method break partition_destroy this -} - - -/** - * Release all resources held by a partition state - * and free the partition state pointer - * - * @param this The partition state - */ -void -libgamma_partition_free(libgamma_partition_state_t *restrict this) -{ - libgamma_partition_destroy(this); - free(this); -} - - -/** - * Restore the gamma ramps all CRTC:s with a partition to the system settings - * - * @param this The partition state - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -int -libgamma_partition_restore(libgamma_partition_state_t *restrict this) -{ -$>switch this.site.method return partition_restore this -} - - - -/** - * Initialise an allocated CRTC state - * - * @param this The CRTC state to initialise - * @param partition The partition state for the partition that the CRTC belongs to - * @param crtc The index of the CRTC within the partition - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -int -libgamma_crtc_initialise(libgamma_crtc_state_t *restrict this, libgamma_partition_state_t *restrict partition, size_t crtc) -{ - this->partition = partition; - this->crtc = crtc; -$>switch partition.site.method return crtc_initialise this partition crtc -} - - -/** - * Release all resources held by a CRTC state - * - * @param this The CRTC state - */ -void -libgamma_crtc_destroy(libgamma_crtc_state_t *restrict this) -{ -$>switch this.partition.site.method break crtc_destroy this -} - - -/** - * Release all resources held by a CRTC state - * and free the CRTC state pointer - * - * @param this The CRTC state - */ -void -libgamma_crtc_free(libgamma_crtc_state_t *restrict this) -{ - libgamma_crtc_destroy(this); - free(this); -} - - -/** - * Restore the gamma ramps for a CRTC to the system settings for that CRTC - * - * @param this The CRTC state - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -int -libgamma_crtc_restore(libgamma_crtc_state_t *restrict this) -{ -$>switch this.partition.site.method return crtc_restore this -} - - - -/** - * Read information about a CRTC - * - * @param this Instance of a data structure to fill with the information about the CRTC - * @param crtc The state of the CRTC whose information should be read - * @param fields OR:ed identifiers for the information about the CRTC that should be read - * @return Zero on success, -1 on error; on error refer to the error reports in `this` - */ -int -libgamma_get_crtc_information(libgamma_crtc_information_t *restrict this, libgamma_crtc_state_t *restrict crtc, int32_t fields) -{ -#ifdef HAVE_NO_LIBGAMMA_METHODS - (void) fields; -#endif - this->edid = NULL; - this->connector_name = NULL; -$>switch crtc.partition.site.method return get_crtc_information this crtc fields -} - - -/** - * Release all resources in an information data structure for a CRTC - * - * @param this The CRTC information - */ -void -libgamma_crtc_information_destroy(libgamma_crtc_information_t *restrict this) -{ - free(this->edid); - free(this->connector_name); -} - - -/** - * Release all resources in an information data structure for a CRTC - * and free the data structure pointer - * - * @param this The CRTC information - */ -void -libgamma_crtc_information_free(libgamma_crtc_information_t *restrict this) -{ - libgamma_crtc_information_destroy(this); - free(this); -} - - -/** - * Convert a raw representation of an EDID to a hexadecimal representation - * - * @param 1 Casing name - * @param 2 The hexadecimal alphabet - * @param edid The EDID in raw representation - * @param length The length of `edid` - * @return The EDID in hexadecimal representation - * `NULL` on allocation error, `errno` will be set accordingly - */ -$>behex_edid () -$>{ -char * -libgamma_behex_edid_${1}(const unsigned char *restrict edid, size_t length) -{ - char *restrict out; - size_t i; - - /* Allocate memory area for the output string */ - out = malloc((length * 2 + 1) * sizeof(char)); - if (!out) - return NULL; - - /* Translate from raw octets to hexadecimal */ - for (i = 0; i < length; i++) { - out[i * 2 + 0] = "${2}"[(edid[i] >> 4) & 15]; - out[i * 2 + 1] = "${2}"[(edid[i] >> 0) & 15]; - } - /* NUL-terminate the output string */ - out[length * 2] = '\0'; - - return out; -} -$>} - - -/** - * Convert a raw representation of an EDID to a lowercase hexadecimal representation - * - * @param edid The EDID in raw representation - * @param length The length of `edid` - * @return The EDID in lowercase hexadecimal representation, - * `NULL` on allocation error, `errno` will be set accordingly - */ -$>behex_edid lowercase 0123456789abcdef - - -/** - * Convert a raw representation of an EDID to an uppercase hexadecimal representation - * - * @param edid The EDID in raw representation - * @param length The length of `edid` - * @return The EDID in uppercase hexadecimal representation, - * NULL` on allocation error, `errno` will be set accordingly - */ -$>behex_edid uppercase 0123456789ABCDEF - - -/** - * Convert an hexadecimal representation of an EDID to a raw representation - * - * @param edid The EDID in hexadecimal representation - * @return The EDID in raw representation, it will be half the length - * of `edid` (the input value); `NULL` on allocation error or - * if the EDID is malformated, `errno` will be set accordingly - */ -unsigned char * -libgamma_unhex_edid(const char *restrict edid) -{ -#define not_range(lower, V, upper) (V < lower || upper < V) -#define is_not_hex(V) (not_range('0', V, '9') && not_range('a', V, 'f') && not_range('A', V, 'F')) - - unsigned char *restrict out; - size_t i, n = strlen(edid); - char a, b; - - /* Check that the length of the strings is even, - * otherwise it cannot represent bytes */ - if (n & 1) { - errno = EINVAL; - return NULL; - } - - /* Allocate memory area for output octet array */ - n /= 2 * sizeof(unsigned char); - out = malloc(n); - if (!out) - return NULL; - - /* Convert to raw octet array */ - for (i = 0; i < n; i++) { - /* Get the next character pair that, it represents an octet. */ - a = edid[i * 2 + 0]; - b = edid[i * 2 + 1]; - - /* Verify that the input is in hexadecimal */ - if (is_not_hex(a) || is_not_hex(b)) { - free(out); - errno = EINVAL; - return NULL; - } - - /* Convert each chararacter to raw format */ - a = (char)((a & 15) + (a > '9' ? 9 : 0)); - b = (char)((b & 15) + (b > '9' ? 9 : 0)); - - /* Combine the two characters into one octet */ - out[i] = (unsigned char)((a << 4) | b); - } - - return out; - -#undef is_hex -#undef not_range -} - - -/** - * Get the current gamma ramps for a CRTC, 16-bit gamma-depth version - * - * @param this The CRTC state - * @param ramps The gamma ramps to fill with the current values - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -int -libgamma_crtc_get_gamma_ramps16(libgamma_crtc_state_t *restrict this, libgamma_gamma_ramps16_t *restrict ramps) -{ - libgamma_gamma_ramps_any_t ramps_; - -#ifdef HAVE_NO_LIBGAMMA_METHODS - (void) ramps; -#endif - - switch (this->partition->site->method) { - /* Methods other than Quartz/CoreGraphics uses 16-bit integers */ -$>for method in $(get-methods | grep -v QUARTZ_CORE_GRAPHICS); do -#ifdef HAVE_LIBGAMMA_METHOD_${method} - case LIBGAMMA_METHOD_${method}: - return libgamma_$(lowercase $method)_crtc_get_gamma_ramps16(this, ramps); -#endif - - /* The Quartz/CoreGraphics method uses single precision float */ -$>done -#ifdef HAVE_LIBGAMMA_METHOD_QUARTZ_CORE_GRAPHICS - case LIBGAMMA_METHOD_QUARTZ_CORE_GRAPHICS: - ramps_.bits16 = *ramps; - return libgamma_translated_ramp_get(this, &ramps_, 16, -1, libgamma_crtc_get_gamma_rampsf); -#endif - - /* The selected method does not exist */ - default: - return LIBGAMMA_NO_SUCH_ADJUSTMENT_METHOD; - } -} - - -/** - * Set the gamma ramps for a CRTC, 16-bit gamma-depth version - * - * @param this The CRTC state - * @param ramps The gamma ramps to apply - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -int -libgamma_crtc_set_gamma_ramps16(libgamma_crtc_state_t *restrict this, libgamma_gamma_ramps16_t ramps) -{ - libgamma_gamma_ramps_any_t ramps_; - -#ifdef HAVE_NO_LIBGAMMA_METHODS - (void) ramps; -#endif - - switch (this->partition->site->method) { - /* Methods other than Quartz/CoreGraphics uses 16-bit integers */ -$>for method in $(get-methods | grep -v QUARTZ_CORE_GRAPHICS); do -#ifdef HAVE_LIBGAMMA_METHOD_${method} - case LIBGAMMA_METHOD_${method}: - return libgamma_$(lowercase $method)_crtc_set_gamma_ramps16(this, ramps); -#endif -$>done - - /* The Quartz/CoreGraphics method uses single precision float */ -#ifdef HAVE_LIBGAMMA_METHOD_QUARTZ_CORE_GRAPHICS - case LIBGAMMA_METHOD_QUARTZ_CORE_GRAPHICS: - ramps_.bits16 = ramps; - return libgamma_translated_ramp_set(this, ramps_, 16, -1, libgamma_crtc_set_gamma_rampsf); -#endif - - /* The selected method does not exist. */ - default: - return LIBGAMMA_NO_SUCH_ADJUSTMENT_METHOD; - } -} - - - -/** - * Set or get the gamma ramps for a CRTC, non-16-bit gamma-depth version - * - * @param 1 Either `get` or `set`, for the action that the name of value implies - * @param 2 The `ramp*` pattern for the ramp structure and function to call - * @param 3 Either of `bit8`, `bit16`, `bit32`, `bit64`, `float_single`, `float_double`; - * rather self-explanatory - * @param 4 The number of bits in the gamma depth, -1 for single precision float, - * (`float`) and -2 for double percition float (`double`) - * @param this The CRTC state - * @param ramps The gamma ramps to apply, or - * the gamma ramps to fill with the current values - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_get_gamma_ramps () -$>{ -$<action=$1 - ramps=$2 - type=$3 - bits=$4 - p= - if [ $action = get ]; then - p='*' - fi -$> -int -libgamma_crtc_${action}_gamma_${ramps}(libgamma_crtc_state_t *restrict this, libgamma_gamma_${ramps}_t${p:+* restrict} ramps) -{ - libgamma_gamma_ramps_any_t ramps_; - switch (this->partition->site->method) { - /* The dummy method supports all ramp depths */ -#ifdef HAVE_LIBGAMMA_METHOD_DUMMY - case LIBGAMMA_METHOD_DUMMY: - return libgamma_dummy_crtc_${action}_gamma_${ramps}(this, ramps); -#endif - - /* The Quartz/CoreGraphics method uses single precision float */ -#ifdef HAVE_LIBGAMMA_METHOD_QUARTZ_CORE_GRAPHICS - case LIBGAMMA_METHOD_QUARTZ_CORE_GRAPHICS: -$>if [ $bits = -1 ]; then - /* Single precision float is used */ - return libgamma_quartz_cg_crtc_${action}_gamma_${ramps}(this, ramps); -$>else - /* Something else is used and we convert to Single precision float */ - ramps_.${type} = ${p}ramps; - return libgamma_translated_ramp_${action}(this, ${p:+&}ramps_, ${bits}, -1, libgamma_crtc_${action}_gamma_rampsf); -$>fi -#endif - - /* Other methods use 16-bit integers. */ - default: - ramps_.${type} = ${p}ramps; - return libgamma_translated_ramp_${action}(this, ${p:+&}ramps_, ${bits}, 16, libgamma_crtc_${action}_gamma_ramps16); - } -} -$>} - - - -/** - * Get the current gamma ramps for a CRTC, 8-bit gamma-depth version - * - * @param this The CRTC state - * @param ramps The gamma ramps to fill with the current values - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_get_gamma_ramps get ramps8 bits8 8 - - -/** - * Set the gamma ramps for a CRTC, 32-bit gamma-depth version - * - * @param this The CRTC state - * @param ramps The gamma ramps to apply - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_get_gamma_ramps set ramps8 bits8 8 - - - -/** - * Get the current gamma ramps for a CRTC, 32-bit gamma-depth version - * - * @param this The CRTC state - * @param ramps The gamma ramps to fill with the current values - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_get_gamma_ramps get ramps32 bits32 32 - - -/** - * Set the gamma ramps for a CRTC, 32-bit gamma-depth version - * - * @param this The CRTC state - * @param ramps The gamma ramps to apply - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_get_gamma_ramps set ramps32 bits32 32 - - - -/** - * Get the current gamma ramps for a CRTC, 64-bit gamma-depth version - * - * @param this The CRTC state - * @param ramps The gamma ramps to fill with the current values - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_get_gamma_ramps get ramps64 bits64 64 - - -/** - * Set the gamma ramps for a CRTC, 64-bit gamma-depth version - * - * @param this The CRTC state - * @param ramps The gamma ramps to apply - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_get_gamma_ramps set ramps64 bits64 64 - - -/** - * Get the current gamma ramps for a CRTC, `float` version - * - * @param this The CRTC state - * @param ramps The gamma ramps to fill with the current values - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_get_gamma_ramps get rampsf float_single -1 - - -/** - * Set the gamma ramps for a CRTC, `float` version - * - * @param this The CRTC state - * @param ramps The gamma ramps to apply - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_get_gamma_ramps set rampsf float_single -1 - - - -/** - * Get the current gamma ramps for a CRTC, `double` version - * - * @param this The CRTC state - * @param ramps The gamma ramps to fill with the current values - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_get_gamma_ramps get rampsd float_double -2 - - -/** - * Set the gamma ramps for a CRTC, `double` version - * - * @param this The CRTC state - * @param ramps The gamma ramps to apply - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_get_gamma_ramps set rampsd float_double -2 - - - -/** - * Set the gamma ramps for a CRTC - * - * Note that this will probably involve the library allocating temporary data - * - * @param 1 The data type for the ramp stop elements - * @param 2 The `ramp*` pattern for the ramp structure and function to call - * @param this The CRTC state - * @param red_function The function that generates the gamma ramp for the red channel - * @param green_function The function that generates the gamma ramp for the green channel - * @param blue_function The function that generates the gamma ramp for the blue channel - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_gamma_ramps_f () -$>{ -int -libgamma_crtc_set_gamma_${2}_f(libgamma_crtc_state_t *restrict this, libgamma_gamma_${2}_fun *red_function, - libgamma_gamma_${2}_fun *green_function, libgamma_gamma_${2}_fun *blue_function) -{ - libgamma_crtc_information_t info; - libgamma_gamma_${2}_t ramps; - size_t i, n; - int e; - - /* Get the size of the gamma ramps */ - if (libgamma_get_crtc_information(&info, this, LIBGAMMA_CRTC_INFO_GAMMA_SIZE)) { - e = info.gamma_size_error; - if (e < 0) - return e; - errno = e; - return LIBGAMMA_ERRNO_SET; - } - - /* Copy the size of the gamma ramps and calculte the grand size */ - n = ramps. red_size = info. red_gamma_size; - n += ramps.green_size = info.green_gamma_size; - n += ramps. blue_size = info. blue_gamma_size; - - /* Allocate gamma ramps */ - ramps. red = malloc(n * sizeof(${1})); - ramps.green = &ramps. red[ramps. red_size]; - ramps. blue = &ramps.green[ramps.green_size]; - if (!ramps.red) - return LIBGAMMA_ERRNO_SET; - - /* Generate the gamma ramp for the red chennel */ - for (i = 0, n = ramps.red_size; i < n; i++) - ramps.red[i] = red_function((float)i / (float)(n - 1)); - - /* Generate the gamma ramp for the green chennel */ - for (i = 0, n = ramps.green_size; i < n; i++) - ramps.green[i] = green_function((float)i / (float)(n - 1)); - - /* Generate the gamma ramp for the blue chennel */ - for (i = 0, n = ramps.blue_size; i < n; i++) - ramps.blue[i] = blue_function((float)i / (float)(n - 1)); - - /* Apply the gamma ramps */ - e = libgamma_crtc_set_gamma_${2}(this, ramps); - free(ramps.red); - return e; -} -$>} - - -/** - * Set the gamma ramps for a CRTC, 8-bit gamma-depth function version - * - * Note that this will probably involve the library allocating temporary data - * - * @param this The CRTC state - * @param red_function The function that generates the gamma ramp for the red channel - * @param green_function The function that generates the gamma ramp for the green channel - * @param blue_function The function that generates the gamma ramp for the blue channel - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_gamma_ramps_f uint8_t ramps8 - - -/** - * Set the gamma ramps for a CRTC, 16-bit gamma-depth function version - * - * Note that this will probably involve the library allocating temporary data - * - * @param this The CRTC state - * @param red_function The function that generates the gamma ramp for the red channel - * @param green_function The function that generates the gamma ramp for the green channel - * @param blue_function The function that generates the gamma ramp for the blue channel - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_gamma_ramps_f uint16_t ramps16 - - -/** - * Set the gamma ramps for a CRTC, 32-bit gamma-depth function version - * - * Note that this will probably involve the library allocating temporary data - * - * @param this The CRTC state - * @param red_function The function that generates the gamma ramp for the red channel - * @param green_function The function that generates the gamma ramp for the green channel - * @param blue_function The function that generates the gamma ramp for the blue channel - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_gamma_ramps_f uint32_t ramps32 - - -/** - * Set the gamma ramps for a CRTC, 64-bit gamma-depth function version - * - * Note that this will probably involve the library allocating temporary data - * - * @param this The CRTC state - * @param red_function The function that generates the gamma ramp for the red channel - * @param green_function The function that generates the gamma ramp for the green channel - * @param blue_function The function that generates the gamma ramp for the blue channel - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_gamma_ramps_f uint64_t ramps64 - - -/** - * Set the gamma ramps for a CRTC, `float` function version - * - * Note that this will probably involve the library allocating temporary data - * - * @param this The CRTC state - * @param red_function The function that generates the gamma ramp for the red channel - * @param green_function The function that generates the gamma ramp for the green channel - * @param blue_function The function that generates the gamma ramp for the blue channel - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_gamma_ramps_f float rampsf - - -/** - * Set the gamma ramps for a CRTC, `double` function version - * - * Note that this will probably involve the library allocating temporary data - * - * @param this The CRTC state - * @param red_function The function that generates the gamma ramp for the red channel - * @param green_function The function that generates the gamma ramp for the green channel - * @param blue_function The function that generates the gamma ramp for the blue channel - * @return Zero on success, otherwise (negative) the value of an - * error identifier provided by this library - */ -$>crtc_set_gamma_ramps_f double rampsd - - - -#ifdef HAVE_NO_LIBGAMMA_METHODS -# ifdef __GNUC__ -# pragma GCC diagnostic pop -# endif -#endif |