diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gamma-x-randr.c | 77 | ||||
| -rw-r--r-- | src/gamma-x-randr.h | 2 |
2 files changed, 73 insertions, 6 deletions
diff --git a/src/gamma-x-randr.c b/src/gamma-x-randr.c index 1d7b4bd..5eca1c8 100644 --- a/src/gamma-x-randr.c +++ b/src/gamma-x-randr.c @@ -26,6 +26,8 @@ #include <stdlib.h> #include <errno.h> +#include <string.h> +#include <stdint.h> #include <xcb/xcb.h> #include <xcb/randr.h> @@ -44,6 +46,31 @@ /** + * Translate an xcb error into a libgamma error + * + * @param error_code The xcb error + * @param default_error The libgamma error to use if the xcb error is not recognised + * @return The libgamma error + */ +static int libgamma_x_randr_translate_error(int error_code, int default_error) +{ + switch (error_code) + { + case XCB_CONN_ERROR: return errno = ECONNABORTED, LIBGAMMA_ERRNO_SET; + case XCB_CONN_CLOSED_EXT_NOTSUPPORTED: return errno = ENOPROTOOPT, LIBGAMMA_ERRNO_SET; + case XCB_CONN_CLOSED_MEM_INSUFFICIENT: return errno = ENOMEM, LIBGAMMA_ERRNO_SET; + case XCB_CONN_CLOSED_REQ_LEN_EXCEED: return errno = EMSGSIZE, LIBGAMMA_ERRNO_SET; + case XCB_CONN_CLOSED_PARSE_ERR: return LIBGAMMA_NO_SUCH_SITE; + case XCB_CONN_CLOSED_INVALID_SCREEN: return LIBGAMMA_NO_SUCH_PARTITION; + case XCB_CONN_CLOSED_FDPASSING_FAILED: return errno = EIO, LIBGAMMA_ERRNO_SET; + default: + return default_error; + } +} + + + +/** * Return the capabilities of the adjustment method * * @param this The data structure to fill with the method's capabilities @@ -105,7 +132,7 @@ int libgamma_x_randr_site_initialise(libgamma_site_state_t* restrict this, */ void libgamma_x_randr_site_destroy(libgamma_site_state_t* restrict this) { - /* TODO */ + xcb_disconnect((xcb_connection_t*)(this->data)); } @@ -147,7 +174,7 @@ int libgamma_x_randr_partition_initialise(libgamma_partition_state_t* restrict t */ void libgamma_x_randr_partition_destroy(libgamma_partition_state_t* restrict this) { - /* TODO */ + free(this->data); } @@ -189,7 +216,7 @@ int libgamma_x_randr_crtc_initialise(libgamma_crtc_state_t* restrict this, */ void libgamma_x_randr_crtc_destroy(libgamma_crtc_state_t* restrict this) { - /* TODO */ + (void) this; } @@ -234,7 +261,35 @@ int libgamma_x_randr_get_crtc_information(libgamma_crtc_information_t* restrict int libgamma_x_randr_crtc_get_gamma_ramps(libgamma_crtc_state_t* restrict this, libgamma_gamma_ramps_t* restrict ramps) { - /* TODO */ + xcb_connection_t* restrict connection = this->partition->site->data; + xcb_randr_get_crtc_gamma_cookie_t cookie; + xcb_randr_get_crtc_gamma_reply_t* restrict reply; + xcb_generic_error_t* error; + uint16_t* restrict red; + uint16_t* restrict green; + uint16_t* restrict blue; + +#ifdef DEBUG + if ((ramps->red_size != ramps->green_size) || + (ramps->red_size != ramps->blue_size)) + return LIBGAMMA_MIXED_GAMMA_RAMP_SIZE; +#endif + + cookie = xcb_randr_get_crtc_gamma(connection, *(xcb_randr_crtc_t*)(this->data)); + reply = xcb_randr_get_crtc_gamma_reply(connection, cookie, &error); + + if (error != NULL) + return libgamma_x_randr_translate_error(error->error_code, LIBGAMMA_GAMMA_RAMP_READ_FAILED); + + red = xcb_randr_get_crtc_gamma_red(reply); + green = xcb_randr_get_crtc_gamma_green(reply); + blue = xcb_randr_get_crtc_gamma_blue(reply); + memcpy(ramps->red, red, ramps->red_size * sizeof(uint16_t)); + memcpy(ramps->green, green, ramps->green_size * sizeof(uint16_t)); + memcpy(ramps->blue, blue, ramps->blue_size * sizeof(uint16_t)); + + free(reply); + return 0; } @@ -249,6 +304,18 @@ int libgamma_x_randr_crtc_get_gamma_ramps(libgamma_crtc_state_t* restrict this, int libgamma_x_randr_crtc_set_gamma_ramps(libgamma_crtc_state_t* restrict this, libgamma_gamma_ramps_t ramps) { - /* TODO */ + xcb_connection_t* restrict connection = this->partition->site->data; + xcb_void_cookie_t cookie; + xcb_generic_error_t* restrict error; +#ifdef DEBUG + if ((ramps.red_size != ramps.green_size) || + (ramps.red_size != ramps.blue_size)) + return LIBGAMMA_MIXED_GAMMA_RAMP_SIZE; +#endif + cookie = xcb_randr_set_crtc_gamma_checked(connection, *(xcb_randr_crtc_t*)(this->data), + (uint16_t)(ramps.red_size), ramps.red, ramps.green, ramps.blue); + if ((error = xcb_request_check(connection, cookie)) != NULL) + return libgamma_x_randr_translate_error(error->error_code, LIBGAMMA_GAMMA_RAMP_WRITE_FAILED); + return 0; } diff --git a/src/gamma-x-randr.h b/src/gamma-x-randr.h index 0ec432d..4a49dc2 100644 --- a/src/gamma-x-randr.h +++ b/src/gamma-x-randr.h @@ -112,7 +112,7 @@ int libgamma_x_randr_crtc_initialise(libgamma_crtc_state_t* restrict this, * * @param this The CRTC state */ -void libgamma_x_randr_crtc_destroy(libgamma_crtc_state_t* restrict this); +void libgamma_x_randr_crtc_destroy(libgamma_crtc_state_t* restrict this) __attribute__((const)); /** * Restore the gamma ramps for a CRTC to the system settings for that CRTC |