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-rw-r--r--src/servers/gamma.c139
1 files changed, 130 insertions, 9 deletions
diff --git a/src/servers/gamma.c b/src/servers/gamma.c
index 0330c51..3eec7ec 100644
--- a/src/servers/gamma.c
+++ b/src/servers/gamma.c
@@ -47,6 +47,8 @@ int handle_get_gamma_info(size_t conn, const char* restrict message_id, const ch
char* restrict buf;
char depth[3];
const char* supported;
+ const char* colourspace;
+ char* gamut[8 * sizeof("White x: 1023")];
size_t n;
if (crtc == NULL) return send_error("protocol error: 'CRTC' header omitted");
@@ -71,6 +73,38 @@ int handle_get_gamma_info(size_t conn, const char* restrict message_id, const ch
default: supported = "maybe"; break;
}
+ switch (output->colourspace)
+ {
+ case COLOURSPACE_SRGB_SANS_GAMUT:
+ case COLOURSPACE_SRGB: colourspace = "Colour space: sRGB\n"; break;
+ case COLOURSPACE_RGB_SANS_GAMUT:
+ case COLOURSPACE_RGB: colourspace = "Colour space: RGB\n"; break;
+ case COLOURSPACE_NON_RGB: colourspace = "Colour space: non-RGB\n"; break;
+ case COLOURSPACE_GREY: colourspace = "Colour space: grey\n"; break;
+ default: colourspace = ""; break;
+ }
+
+ switch (output->colourspace)
+ {
+ case COLOURSPACE_SRGB:
+ case COLOURSPACE_RGB:
+ sprintf(gamut,
+ "Red x: %u\n"
+ "Red y: %u\n"
+ "Green x: %u\n"
+ "Green y: %u\n"
+ "Blue x: %u\n"
+ "Blue y: %u\n"
+ "White x: %u\n"
+ "White y: %u\n",
+ output->red_x, output->red_y, output->green_x, output->green_y,
+ output->blue_x, output->blue_y, output->white_x, output->white_y);
+ break;
+ default:
+ *gamut = '\0';
+ break;
+ }
+
MAKE_MESSAGE(&buf, &n, 0,
"In response to: %s\n"
"Cooperative: yes\n" /* In mds: say ‘no’, mds-coopgamma changes to ‘yes’.” */
@@ -79,9 +113,10 @@ int handle_get_gamma_info(size_t conn, const char* restrict message_id, const ch
"Green size: %zu\n"
"Blue size: %zu\n"
"Gamma support: %s\n"
+ "%s%s"
"\n",
message_id, depth, output->red_size, output->green_size,
- output->blue_size, supported);
+ output->blue_size, supported, gamut, colourspace);
return send_message(conn, buf, n);
}
@@ -116,6 +151,90 @@ void set_gamma(const struct output* restrict output, const union gamma_ramps* re
}
+/**
+ * Parse the EDID of a monitor
+ *
+ * @param output The output
+ */
+static void parse_edid(struct output* restrict output)
+{
+ const unsigned char* restrict edid = (const unsigned char*)(output->name);
+ size_t i;
+ unsigned char sum;
+ int analogue;
+
+ output->red_x = output->green_x = output->blue_x = output->white_x = 0;
+ output->red_y = output->green_y = output->blue_y = output->white_y = 0;
+
+ if (output->name_is_edid == 0)
+ {
+ output->colourspace = COLOURSPACE_UNKNOWN;
+ return;
+ }
+
+ if (strlen(edid) < 128)
+ return;
+ for (i = 0, sum = 0; i < 128; i++)
+ sum += edid[i];
+ if (sum != 0)
+ return;
+ if ((edid[0] != 0) || (edid[7] != 0))
+ return;
+ for (i = 1; i < 7; i++)
+ if (edid[i] != 0xFF)
+ return;
+
+ analogue = !(edid[20] & 0x80);
+ if (!analogue)
+ output->colourspace = COLOURSPACE_RGB;
+ else
+ switch ((edid[24] >> 3) & 3)
+ {
+ case 0: output->colourspace = COLOURSPACE_GREY; break;
+ case 1: output->colourspace = COLOURSPACE_RGB; break;
+ case 2: output->colourspace = COLOURSPACE_NON_RGB; break;
+ default: output->colourspace = COLOURSPACE_UNKNOWN; break;
+ }
+
+ if (output->colourspace != COLOURSPACE_RGB)
+ return;
+
+ if (edid[24] & 2)
+ output->colourspace = COLOURSPACE_SRGB;
+
+ output->red_x = (edid[25] >> 6) & 3;
+ output->red_y = (edid[25] >> 4) & 3;
+ output->green_x = (edid[25] >> 2) & 3;
+ output->green_y = (edid[25] >> 0) & 3;
+ output->blue_x = (edid[26] >> 6) & 3;
+ output->blue_y = (edid[26] >> 4) & 3;
+ output->white_x = (edid[26] >> 2) & 3;
+ output->white_y = (edid[26] >> 0) & 3;
+
+ output->red_x |= ((unsigned)(edid[27])) << 2;
+ output->red_y |= ((unsigned)(edid[28])) << 2;
+ output->green_x |= ((unsigned)(edid[29])) << 2;
+ output->green_y |= ((unsigned)(edid[30])) << 2;
+ output->blue_x |= ((unsigned)(edid[31])) << 2;
+ output->blue_y |= ((unsigned)(edid[32])) << 2;
+ output->white_x |= ((unsigned)(edid[33])) << 2;
+ output->white_y |= ((unsigned)(edid[34])) << 2;
+
+ if ((output->red_x == output->red_y) &&
+ (output->red_x == output->green_x) &&
+ (output->red_x == output->green_y) &&
+ (output->red_x == output->blue_x) &&
+ (output->red_x == output->blue_y) &&
+ (output->red_x == output->white_x) &&
+ (output->red_x == output->white_y))
+ {
+ if (output->colourspace == COLOURSPACE_SRGB)
+ output->colourspace = COLOURSPACE_SRGB_SANS_GAMUT;
+ else
+ output->colourspace = COLOURSPACE_RGB_SANS_GAMUT;
+ }
+}
+
/**
* Store all current gamma ramps
@@ -135,17 +254,18 @@ int initialise_gamma_info(void)
LIBGAMMA_CRTC_INFO_MACRO_RAMP |
LIBGAMMA_CRTC_INFO_GAMMA_SUPPORT |
LIBGAMMA_CRTC_INFO_CONNECTOR_NAME);
- outputs[i].depth = info.gamma_depth_error ? 0 : info.gamma_depth;
- outputs[i].red_size = info.gamma_size_error ? 0 : info.red_gamma_size;
- outputs[i].green_size = info.gamma_size_error ? 0 : info.green_gamma_size;
- outputs[i].blue_size = info.gamma_size_error ? 0 : info.blue_gamma_size;
- outputs[i].supported = info.gamma_support_error ? 0 : info.gamma_support;
+ outputs[i].depth = info.gamma_depth_error ? 0 : info.gamma_depth;
+ outputs[i].red_size = info.gamma_size_error ? 0 : info.red_gamma_size;
+ outputs[i].green_size = info.gamma_size_error ? 0 : info.green_gamma_size;
+ outputs[i].blue_size = info.gamma_size_error ? 0 : info.blue_gamma_size;
+ outputs[i].supported = info.gamma_support_error ? 0 : info.gamma_support;
if (outputs[i].depth == 0 || outputs[i].red_size == 0 ||
outputs[i].green_size == 0 || outputs[i].blue_size == 0)
- outputs[i].supported = 0;
- outputs[i].name = get_crtc_name(&info, crtcs + i);
+ outputs[i].supported = 0;
+ outputs[i].name = get_crtc_name(&info, crtcs + i);
saved_errno = errno;
- outputs[i].crtc = crtcs + i;
+ outputs[i].name_is_edid = ((info.edid_error == 0) && (info.edid != NULL));
+ outputs[i].crtc = crtcs + i;
libgamma_crtc_information_destroy(&info);
outputs[i].ramps_size = outputs[i].red_size + outputs[i].green_size + outputs[i].blue_size;
switch (outputs[i].depth)
@@ -163,6 +283,7 @@ int initialise_gamma_info(void)
errno = saved_errno;
if (outputs[i].name == NULL)
return -1;
+ parse_edid(outputs + i);
}
return 0;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-09-19 01:20:38 +0000