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-rw-r--r--src/gamma-linux-drm.c9
-rw-r--r--src/gamma-x-randr.c172
-rw-r--r--src/libgamma-error.h7
3 files changed, 172 insertions, 16 deletions
diff --git a/src/gamma-linux-drm.c b/src/gamma-linux-drm.c
index 18ebf2b..bdb231c 100644
--- a/src/gamma-linux-drm.c
+++ b/src/gamma-linux-drm.c
@@ -608,7 +608,10 @@ static int get_edid(libgamma_crtc_state_t* restrict crtc,
{
blob = drmModeGetPropertyBlob(card->fd, (uint32_t)(connector->prop_values[prop_i]));
if (blob == NULL)
- goto fail_blob;
+ {
+ drmModeFreeProperty(prop);
+ return out->edid_error = LIBGAMMA_PROPERTY_VALUE_QUERY_FAILED;
+ }
if (blob->data != NULL)
{
out->edid_length = blob->length;
@@ -622,11 +625,9 @@ static int get_edid(libgamma_crtc_state_t* restrict crtc,
}
drmModeFreePropertyBlob(blob);
}
- fail_blob:
drmModeFreeProperty(prop);
}
- out->edid_error = LIBGAMMA_EDID_NOT_FOUND;
- return -1;
+ return out->edid_error = LIBGAMMA_EDID_NOT_FOUND;
}
diff --git a/src/gamma-x-randr.c b/src/gamma-x-randr.c
index f37cbfe..2749636 100644
--- a/src/gamma-x-randr.c
+++ b/src/gamma-x-randr.c
@@ -49,6 +49,43 @@
/**
+ * Data structure for partition data
+ */
+typedef struct libgamma_x_randr_partition_data
+{
+ /**
+ * Mapping from CRTC indices to CRTC identifiers
+ */
+ xcb_randr_crtc_t* crtcs;
+
+ /**
+ * Mapping from output indices to output identifiers
+ */
+ xcb_randr_output_t* outputs;
+
+ /**
+ * The number of outputs available
+ */
+ size_t outputs_count;
+
+ /**
+ * Mapping from CRTC indices to output indices.
+ * CRTC's without an output (should be impossible)
+ * have the value `SIZE_MAX` which is impossible
+ * for an existing mapping.
+ */
+ size_t* crtc_to_output;
+
+ /**
+ * Screen configuration timestamp
+ */
+ xcb_timestamp_t config_timestamp;
+
+} libgamma_x_randr_partition_data_t;
+
+
+
+/**
* Translate an xcb error into a libgamma error
*
* @param error_code The xcb error
@@ -215,6 +252,24 @@ int libgamma_x_randr_site_restore(libgamma_site_state_t* restrict this)
}
+/**
+ * Duplicate a memory area
+ *
+ * @param ptr The memory aree
+ * @param bytes The size, in bytes, of the memory area
+ * @return A duplication of the memory, `NULL` if zero-length or on error
+ */
+static inline void* memdup(void* restrict ptr, size_t bytes)
+{
+ char* restrict rc;
+ if (bytes == 0)
+ return NULL;
+ if ((rc = malloc(bytes)) == NULL)
+ return NULL;
+ memcpy(rc, ptr, bytes);
+ return rc;
+}
+
/**
* Initialise an allocated partition state
@@ -228,6 +283,7 @@ int libgamma_x_randr_site_restore(libgamma_site_state_t* restrict this)
int libgamma_x_randr_partition_initialise(libgamma_partition_state_t* restrict this,
libgamma_site_state_t* restrict site, size_t partition)
{
+ int fail_rc = LIBGAMMA_ERRNO_SET;
xcb_connection_t* restrict connection = site->data;
const xcb_setup_t* setup = xcb_get_setup(connection);
xcb_screen_t* screen = NULL;
@@ -236,6 +292,8 @@ int libgamma_x_randr_partition_initialise(libgamma_partition_state_t* restrict t
xcb_randr_get_screen_resources_current_cookie_t cookie;
xcb_randr_get_screen_resources_current_reply_t* reply;
xcb_randr_crtc_t* crtcs;
+ xcb_randr_output_t* outputs;
+ libgamma_x_randr_partition_data_t* data;
size_t i;
if (setup == NULL)
@@ -260,16 +318,74 @@ int libgamma_x_randr_partition_initialise(libgamma_partition_state_t* restrict t
this->crtcs_available = reply->num_crtcs;
crtcs = xcb_randr_get_screen_resources_current_crtcs(reply);
- /* Copy the CRTC:s, just so we do not have to keep the reply in memory. */
- this->data = malloc(reply->num_crtcs * sizeof(xcb_randr_crtc_t));
- if (this->data == NULL)
+ outputs = xcb_randr_get_screen_resources_current_outputs(reply);
+ if ((crtcs == NULL) || (outputs == NULL))
{
free(reply);
- return LIBGAMMA_ERRNO_SET;
+ return LIBGAMMA_REPLY_VALUE_EXTRACTION_FAILED;
+ }
+
+ /* We use `calloc` because we want `data`'s pointers to be `NULL` if not allocated at `fail`. */
+ data = calloc(1, sizeof(libgamma_x_randr_partition_data_t));
+ if (data == NULL)
+ goto fail;
+
+ /* Copy the CRTC:s, just so we do not have to keep the reply in memory. */
+ data->crtcs = memdup(crtcs, (size_t)(reply->num_crtcs) * sizeof(xcb_randr_crtc_t));
+ if ((data->crtcs == NULL) && (reply->num_crtcs > 0))
+ goto fail;
+
+ /* Copy the outputs as well. */
+ data->outputs = memdup(outputs, (size_t)(reply->num_outputs) * sizeof(xcb_randr_output_t));
+ if ((data->outputs == NULL) && (reply->num_outputs > 0))
+ goto fail;
+
+ data->outputs_count = (size_t)(reply->num_outputs);
+
+ data->crtc_to_output = malloc((size_t)(reply->num_crtcs) * sizeof(size_t));
+ if (data->crtc_to_output == NULL)
+ goto fail;
+ for (i = 0; i < (size_t)(reply->num_crtcs); i++)
+ data->crtc_to_output[i] = SIZE_MAX;
+ for (i = 0; i < (size_t)(reply->num_outputs); i++)
+ {
+ xcb_randr_get_output_info_cookie_t out_cookie;
+ xcb_randr_get_output_info_reply_t* out_reply;
+ uint16_t j;
+
+ out_cookie = xcb_randr_get_output_info(connection, outputs[i], reply->config_timestamp);
+ out_reply = xcb_randr_get_output_info_reply(connection, out_cookie, &error);
+ if (error != NULL)
+ {
+ fail_rc = translate_error(error->error_code, LIBGAMMA_OUTPUT_INFORMATION_QUERY_FAILED, 0);
+ goto fail;
+ }
+
+ for (j = 0; j < reply->num_crtcs; j++)
+ if (crtcs[j] == out_reply->crtc)
+ {
+ data->crtc_to_output[j] = i;
+ break;
+ }
+
+ free(out_reply);
}
- memcpy(this->data, crtcs, reply->num_crtcs * sizeof(xcb_randr_crtc_t));
+
+ data->config_timestamp = reply->config_timestamp;
+ this->data = data;
free(reply);
return 0;
+
+ fail:
+ if (data != NULL)
+ {
+ free(data->crtcs);
+ free(data->outputs);
+ free(data->crtc_to_output);
+ free(data);
+ }
+ free(reply);
+ return fail_rc;
}
@@ -280,7 +396,11 @@ int libgamma_x_randr_partition_initialise(libgamma_partition_state_t* restrict t
*/
void libgamma_x_randr_partition_destroy(libgamma_partition_state_t* restrict this)
{
- free(this->data);
+ libgamma_x_randr_partition_data_t* restrict data = this->data;
+ free(data->crtcs);
+ free(data->outputs);
+ free(data->crtc_to_output);
+ free(data);
}
@@ -311,7 +431,8 @@ int libgamma_x_randr_partition_restore(libgamma_partition_state_t* restrict this
int libgamma_x_randr_crtc_initialise(libgamma_crtc_state_t* restrict this,
libgamma_partition_state_t* restrict partition, size_t crtc)
{
- xcb_randr_crtc_t* crtc_ids = partition->data;
+ libgamma_x_randr_partition_data_t* restrict screen_data = partition->data;
+ xcb_randr_crtc_t* restrict crtc_ids = screen_data->crtcs;
if (crtc >= partition->crtcs_available)
return LIBGAMMA_NO_SUCH_CRTC;
this->data = crtc_ids + crtc;
@@ -626,9 +747,10 @@ int libgamma_x_randr_get_crtc_information(libgamma_crtc_information_t* restrict
{
#define _E(FIELD) ((fields & FIELD) ? LIBGAMMA_CRTC_INFO_NOT_SUPPORTED : 0)
int e = 0;
+ xcb_randr_get_output_info_reply_t* output_info = NULL;
+ xcb_randr_output_t output;
int free_edid;
-
-
+
/* Wipe all error indicators. */
memset(this, 0, sizeof(libgamma_crtc_information_t));
@@ -647,7 +769,35 @@ int libgamma_x_randr_get_crtc_information(libgamma_crtc_information_t* restrict
if ((fields & (CRTC_INFO_ACTIVE | CRTC_INFO_CONNECTOR_NAME)) == 0)
goto cont;
- /* FIXME output */
+ /* Get connector and connector information. */
+ {
+ xcb_connection_t* restrict connection = crtc->partition->site->data;
+ libgamma_x_randr_partition_data_t* restrict screen_data = crtc->partition->data;
+ size_t output_index = screen_data->crtc_to_output[crtc->crtc];
+ xcb_randr_get_output_info_cookie_t cookie;
+ xcb_generic_error_t* error;
+ if (output_index == SIZE_MAX)
+ {
+ e |= this->edid_error = this->gamma_error = this->width_mm_edid_error
+ = this->height_mm_edid_error = this->connector_type_error
+ = this->connector_name_error = this->subpixel_order_error
+ = this->width_mm_error = this->height_mm_error
+ = this->active_error = LIBGAMMA_CONNECTOR_UNKNOWN;
+ goto cont;
+ }
+ output = screen_data->outputs[output_index];
+ cookie = xcb_randr_get_output_info(connection, output, screen_data->config_timestamp);
+ output_info = xcb_randr_get_output_info_reply(connection, cookie, &error);
+ if (error != NULL)
+ {
+ e |= this->edid_error = this->gamma_error = this->width_mm_edid_error
+ = this->height_mm_edid_error = this->connector_type_error
+ = this->connector_name_error = this->subpixel_order_error
+ = this->width_mm_error = this->height_mm_error
+ = this->active_error = LIBGAMMA_OUTPUT_INFORMATION_QUERY_FAILED;
+ goto cont;
+ }
+ }
e |= get_output_name(this, output_info);
if ((fields & CRTC_INFO_CONNECTOR_TYPE))
@@ -686,7 +836,7 @@ int libgamma_x_randr_get_crtc_information(libgamma_crtc_information_t* restrict
this->edid = NULL;
}
- free(output);
+ free(output_info);
return e ? -1 : 0;
#undef _E
}
diff --git a/src/libgamma-error.h b/src/libgamma-error.h
index 80e8a1f..88f9ca7 100644
--- a/src/libgamma-error.h
+++ b/src/libgamma-error.h
@@ -272,6 +272,11 @@ extern const char* libgamma_group_name;
*/
#define LIBGAMMA_PROPERTY_VALUE_QUERY_FAILED (-45)
+/**
+ * A request for information on an output failed, reason unknown
+ */
+#define LIBGAMMA_OUTPUT_INFORMATION_QUERY_FAILED (-46)
+
/**
@@ -279,7 +284,7 @@ extern const char* libgamma_group_name;
* If this is lower than the number your program thinks it
* should be sould update your program for new errors.
*/
-#define LIBGAMMA_ERROR_MIN (-45)
+#define LIBGAMMA_ERROR_MIN (-46)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-09-20 13:38:16 +0000