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mutter/src/backends/meta-monitor.c

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2016 Red Hat
*
* This program 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 2 of the
* License, or (at your option) any later version.
*
* This program 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 program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include "config.h"
#include "backends/meta-monitor.h"
#include "backends/meta-backend-private.h"
#include "backends/meta-crtc.h"
#include "backends/meta-gpu.h"
#include "backends/meta-monitor-manager-private.h"
#include "backends/meta-settings-private.h"
#include "backends/meta-output.h"
#include "core/boxes-private.h"
#define SCALE_FACTORS_PER_INTEGER 4
#define SCALE_FACTORS_STEPS (1.0 / (float) SCALE_FACTORS_PER_INTEGER)
#define MINIMUM_SCALE_FACTOR 1.0f
#define MAXIMUM_SCALE_FACTOR 4.0f
#define MINIMUM_LOGICAL_AREA (800 * 480)
#define MAXIMUM_REFRESH_RATE_DIFF 0.001
typedef struct _MetaMonitorMode
{
MetaMonitor *monitor;
char *id;
MetaMonitorModeSpec spec;
MetaMonitorCrtcMode *crtc_modes;
} MetaMonitorMode;
typedef struct _MetaMonitorModeTiled
{
MetaMonitorMode parent;
gboolean is_tiled;
} MetaMonitorModeTiled;
typedef struct _MetaMonitorPrivate
{
MetaBackend *backend;
GList *outputs;
GList *modes;
GHashTable *mode_ids;
MetaMonitorMode *preferred_mode;
MetaMonitorMode *current_mode;
MetaMonitorSpec *spec;
MetaLogicalMonitor *logical_monitor;
/*
* The primary or first output for this monitor, 0 if we can't figure out.
* It can be matched to a winsys_id of a MetaOutput.
*
* This is used as an opaque token on reconfiguration when switching from
* clone to extended, to decide on what output the windows should go next
* (it's an attempt to keep windows on the same monitor, and preferably on
* the primary one).
*/
uint64_t winsys_id;
char *display_name;
} MetaMonitorPrivate;
G_DEFINE_TYPE_WITH_PRIVATE (MetaMonitor, meta_monitor, G_TYPE_OBJECT)
struct _MetaMonitorNormal
{
MetaMonitor parent;
};
G_DEFINE_TYPE (MetaMonitorNormal, meta_monitor_normal, META_TYPE_MONITOR)
struct _MetaMonitorTiled
{
MetaMonitor parent;
MetaMonitorManager *monitor_manager;
uint32_t tile_group_id;
/* The tile (0, 0) output. */
MetaOutput *origin_output;
/* The output enabled even when a non-tiled mode is used. */
MetaOutput *main_output;
};
G_DEFINE_TYPE (MetaMonitorTiled, meta_monitor_tiled, META_TYPE_MONITOR)
static void
meta_monitor_mode_free (MetaMonitorMode *mode);
MetaMonitorSpec *
meta_monitor_spec_clone (MetaMonitorSpec *monitor_spec)
{
MetaMonitorSpec *new_monitor_spec;
new_monitor_spec = g_new0 (MetaMonitorSpec, 1);
*new_monitor_spec = (MetaMonitorSpec) {
.connector = g_strdup (monitor_spec->connector),
.vendor = g_strdup (monitor_spec->vendor),
.product = g_strdup (monitor_spec->product),
.serial = g_strdup (monitor_spec->serial),
};
return new_monitor_spec;
}
gboolean
meta_monitor_spec_equals (MetaMonitorSpec *monitor_spec,
MetaMonitorSpec *other_monitor_spec)
{
return (g_str_equal (monitor_spec->connector, other_monitor_spec->connector) &&
g_str_equal (monitor_spec->vendor, other_monitor_spec->vendor) &&
g_str_equal (monitor_spec->product, other_monitor_spec->product) &&
g_str_equal (monitor_spec->serial, other_monitor_spec->serial));
}
int
meta_monitor_spec_compare (MetaMonitorSpec *monitor_spec_a,
MetaMonitorSpec *monitor_spec_b)
{
int ret;
ret = strcmp (monitor_spec_a->connector, monitor_spec_b->connector);
if (ret != 0)
return ret;
ret = strcmp (monitor_spec_a->vendor, monitor_spec_b->vendor);
if (ret != 0)
return ret;
ret = strcmp (monitor_spec_a->product, monitor_spec_b->product);
if (ret != 0)
return ret;
return strcmp (monitor_spec_a->serial, monitor_spec_b->serial);
}
void
meta_monitor_spec_free (MetaMonitorSpec *monitor_spec)
{
g_free (monitor_spec->connector);
g_free (monitor_spec->vendor);
g_free (monitor_spec->product);
g_free (monitor_spec->serial);
g_free (monitor_spec);
}
static const MetaOutputInfo *
meta_monitor_get_main_output_info (MetaMonitor *monitor)
{
MetaOutput *output = meta_monitor_get_main_output (monitor);
return meta_output_get_info (output);
}
static void
meta_monitor_generate_spec (MetaMonitor *monitor)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
const MetaOutputInfo *output_info =
meta_monitor_get_main_output_info (monitor);
MetaMonitorSpec *monitor_spec;
monitor_spec = g_new0 (MetaMonitorSpec, 1);
*monitor_spec = (MetaMonitorSpec) {
.connector = g_strdup (output_info->name),
.vendor = g_strdup (output_info->vendor),
.product = g_strdup (output_info->product),
.serial = g_strdup (output_info->serial),
};
priv->spec = monitor_spec;
}
static const double known_diagonals[] = {
12.1,
13.3,
15.6
};
static char *
diagonal_to_str (double d)
{
unsigned int i;
for (i = 0; i < G_N_ELEMENTS (known_diagonals); i++)
{
double delta;
delta = fabs(known_diagonals[i] - d);
if (delta < 0.1)
return g_strdup_printf ("%0.1lf\"", known_diagonals[i]);
}
return g_strdup_printf ("%d\"", (int) (d + 0.5));
}
static char *
meta_monitor_make_display_name (MetaMonitor *monitor,
MetaMonitorManager *monitor_manager)
{
g_autofree char *inches = NULL;
g_autofree char *vendor_name = NULL;
const char *vendor = NULL;
const char *product_name = NULL;
int width_mm;
int height_mm;
meta_monitor_get_physical_dimensions (monitor, &width_mm, &height_mm);
if (meta_monitor_is_laptop_panel (monitor))
return g_strdup (_("Built-in display"));
if (width_mm > 0 && height_mm > 0)
{
if (!meta_monitor_has_aspect_as_size (monitor))
{
double d = sqrt (width_mm * width_mm +
height_mm * height_mm);
inches = diagonal_to_str (d / 25.4);
}
else
{
product_name = meta_monitor_get_product (monitor);
}
}
vendor = meta_monitor_get_vendor (monitor);
if (g_strcmp0 (vendor, "unknown") != 0)
{
vendor_name = meta_monitor_manager_get_vendor_name (monitor_manager,
vendor);
if (!vendor_name)
vendor_name = g_strdup (vendor);
}
else
{
if (inches != NULL)
vendor_name = g_strdup (_("Unknown"));
else
vendor_name = g_strdup (_("Unknown Display"));
}
if (inches != NULL)
{
/**/
return g_strdup_printf (C_("This is a monitor vendor name, followed by a "
"size in inches, like 'Dell 15\"'",
"%s %s"),
vendor_name, inches);
}
else if (product_name != NULL)
{
return g_strdup_printf (C_("This is a monitor vendor name followed by "
"product/model name where size in inches "
"could not be calculated, e.g. Dell U2414H",
"%s %s"),
vendor_name, product_name);
}
else
{
return g_strdup (vendor_name);
}
}
MetaBackend *
meta_monitor_get_backend (MetaMonitor *monitor)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
return priv->backend;
}
GList *
meta_monitor_get_outputs (MetaMonitor *monitor)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
return priv->outputs;
}
MetaOutput *
meta_monitor_get_main_output (MetaMonitor *monitor)
{
return META_MONITOR_GET_CLASS (monitor)->get_main_output (monitor);
}
gboolean
meta_monitor_is_active (MetaMonitor *monitor)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
return !!priv->current_mode;
}
gboolean
meta_monitor_is_primary (MetaMonitor *monitor)
{
MetaOutput *output;
output = meta_monitor_get_main_output (monitor);
return meta_output_is_primary (output);
}
gboolean
meta_monitor_supports_underscanning (MetaMonitor *monitor)
{
const MetaOutputInfo *output_info =
meta_monitor_get_main_output_info (monitor);
return output_info->supports_underscanning;
}
gboolean
meta_monitor_is_underscanning (MetaMonitor *monitor)
{
MetaOutput *output;
output = meta_monitor_get_main_output (monitor);
return meta_output_is_underscanning (output);
}
gboolean
meta_monitor_is_laptop_panel (MetaMonitor *monitor)
{
const MetaOutputInfo *output_info =
meta_monitor_get_main_output_info (monitor);
switch (output_info->connector_type)
{
case META_CONNECTOR_TYPE_eDP:
case META_CONNECTOR_TYPE_LVDS:
case META_CONNECTOR_TYPE_DSI:
return TRUE;
default:
return FALSE;
}
}
gboolean
meta_monitor_is_same_as (MetaMonitor *monitor,
MetaMonitor *other_monitor)
{
MetaMonitorPrivate *priv =
meta_monitor_get_instance_private (monitor);
MetaMonitorPrivate *other_priv =
meta_monitor_get_instance_private (other_monitor);
return priv->winsys_id == other_priv->winsys_id;
}
void
meta_monitor_get_current_resolution (MetaMonitor *monitor,
int *width,
int *height)
{
MetaMonitorMode *mode = meta_monitor_get_current_mode (monitor);
*width = mode->spec.width;
*height = mode->spec.height;
}
void
meta_monitor_derive_layout (MetaMonitor *monitor,
MetaRectangle *layout)
{
META_MONITOR_GET_CLASS (monitor)->derive_layout (monitor, layout);
}
void
meta_monitor_get_physical_dimensions (MetaMonitor *monitor,
int *width_mm,
int *height_mm)
{
const MetaOutputInfo *output_info =
meta_monitor_get_main_output_info (monitor);
*width_mm = output_info->width_mm;
*height_mm = output_info->height_mm;
}
CoglSubpixelOrder
meta_monitor_get_subpixel_order (MetaMonitor *monitor)
{
const MetaOutputInfo *output_info =
meta_monitor_get_main_output_info (monitor);
return output_info->subpixel_order;
}
const char *
meta_monitor_get_connector (MetaMonitor *monitor)
{
const MetaOutputInfo *output_info =
meta_monitor_get_main_output_info (monitor);
return output_info->name;
}
const char *
meta_monitor_get_vendor (MetaMonitor *monitor)
{
const MetaOutputInfo *output_info =
meta_monitor_get_main_output_info (monitor);
return output_info->vendor;
}
const char *
meta_monitor_get_product (MetaMonitor *monitor)
{
const MetaOutputInfo *output_info =
meta_monitor_get_main_output_info (monitor);
return output_info->product;
}
const char *
meta_monitor_get_serial (MetaMonitor *monitor)
{
const MetaOutputInfo *output_info =
meta_monitor_get_main_output_info (monitor);
return output_info->serial;
}
MetaConnectorType
meta_monitor_get_connector_type (MetaMonitor *monitor)
{
const MetaOutputInfo *output_info =
meta_monitor_get_main_output_info (monitor);
return output_info->connector_type;
}
MetaMonitorTransform
meta_monitor_logical_to_crtc_transform (MetaMonitor *monitor,
MetaMonitorTransform transform)
{
MetaOutput *output = meta_monitor_get_main_output (monitor);
return meta_output_logical_to_crtc_transform (output, transform);
}
MetaMonitorTransform
meta_monitor_crtc_to_logical_transform (MetaMonitor *monitor,
MetaMonitorTransform transform)
{
MetaOutput *output = meta_monitor_get_main_output (monitor);
return meta_output_crtc_to_logical_transform (output, transform);
}
static void
meta_monitor_dispose (GObject *object)
{
MetaMonitor *monitor = META_MONITOR (object);
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
if (priv->outputs)
{
g_list_foreach (priv->outputs, (GFunc) meta_output_unset_monitor, NULL);
g_list_free_full (priv->outputs, g_object_unref);
priv->outputs = NULL;
}
G_OBJECT_CLASS (meta_monitor_parent_class)->dispose (object);
}
static void
meta_monitor_finalize (GObject *object)
{
MetaMonitor *monitor = META_MONITOR (object);
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
g_hash_table_destroy (priv->mode_ids);
g_list_free_full (priv->modes, (GDestroyNotify) meta_monitor_mode_free);
meta_monitor_spec_free (priv->spec);
g_free (priv->display_name);
G_OBJECT_CLASS (meta_monitor_parent_class)->finalize (object);
}
static void
meta_monitor_init (MetaMonitor *monitor)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
priv->mode_ids = g_hash_table_new (g_str_hash, g_str_equal);
}
static void
meta_monitor_class_init (MetaMonitorClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = meta_monitor_dispose;
object_class->finalize = meta_monitor_finalize;
}
static char *
generate_mode_id (MetaMonitorModeSpec *monitor_mode_spec)
{
gboolean is_interlaced;
char refresh_rate_str[G_ASCII_DTOSTR_BUF_SIZE];
is_interlaced = !!(monitor_mode_spec->flags & META_CRTC_MODE_FLAG_INTERLACE);
g_ascii_dtostr (refresh_rate_str, G_ASCII_DTOSTR_BUF_SIZE,
monitor_mode_spec->refresh_rate);
return g_strdup_printf ("%dx%d%s@%s",
monitor_mode_spec->width,
monitor_mode_spec->height,
is_interlaced ? "i" : "",
refresh_rate_str);
}
static gboolean
meta_monitor_add_mode (MetaMonitor *monitor,
MetaMonitorMode *monitor_mode,
gboolean replace)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
MetaMonitorMode *existing_mode;
existing_mode = g_hash_table_lookup (priv->mode_ids,
meta_monitor_mode_get_id (monitor_mode));
if (existing_mode && !replace)
return FALSE;
if (existing_mode)
priv->modes = g_list_remove (priv->modes, existing_mode);
priv->modes = g_list_append (priv->modes, monitor_mode);
g_hash_table_replace (priv->mode_ids, monitor_mode->id, monitor_mode);
return TRUE;
}
static MetaMonitorModeSpec
meta_monitor_create_spec (MetaMonitor *monitor,
int width,
int height,
MetaCrtcMode *crtc_mode)
{
const MetaOutputInfo *output_info =
meta_monitor_get_main_output_info (monitor);
const MetaCrtcModeInfo *crtc_mode_info =
meta_crtc_mode_get_info (crtc_mode);
if (meta_monitor_transform_is_rotated (output_info->panel_orientation_transform))
{
int temp = width;
width = height;
height = temp;
}
return (MetaMonitorModeSpec) {
.width = width,
.height = height,
.refresh_rate = crtc_mode_info->refresh_rate,
.flags = crtc_mode_info->flags & HANDLED_CRTC_MODE_FLAGS
};
}
static void
meta_monitor_normal_generate_modes (MetaMonitorNormal *monitor_normal)
{
MetaMonitor *monitor = META_MONITOR (monitor_normal);
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
MetaOutput *output;
const MetaOutputInfo *output_info;
MetaCrtcMode *preferred_mode;
MetaCrtcModeFlag preferred_mode_flags;
unsigned int i;
output = meta_monitor_get_main_output (monitor);
output_info = meta_output_get_info (output);
preferred_mode = output_info->preferred_mode;
preferred_mode_flags = meta_crtc_mode_get_info (preferred_mode)->flags;
for (i = 0; i < output_info->n_modes; i++)
{
MetaCrtcMode *crtc_mode = output_info->modes[i];
const MetaCrtcModeInfo *crtc_mode_info =
meta_crtc_mode_get_info (crtc_mode);
MetaCrtc *crtc;
MetaMonitorMode *mode;
gboolean replace;
mode = g_new0 (MetaMonitorMode, 1);
mode->monitor = monitor;
mode->spec = meta_monitor_create_spec (monitor,
crtc_mode_info->width,
crtc_mode_info->height,
crtc_mode);
mode->id = generate_mode_id (&mode->spec);
mode->crtc_modes = g_new (MetaMonitorCrtcMode, 1);
mode->crtc_modes[0] = (MetaMonitorCrtcMode) {
.output = output,
.crtc_mode = crtc_mode
};
/*
* We don't distinguish between all available mode flags, just the ones
* that are configurable. We still need to pick some mode though, so
* prefer ones that has the same set of flags as the preferred mode;
* otherwise take the first one in the list. This guarantees that the
* preferred mode is always added.
*/
replace = crtc_mode_info->flags == preferred_mode_flags;
if (!meta_monitor_add_mode (monitor, mode, replace))
{
g_assert (crtc_mode != output_info->preferred_mode);
meta_monitor_mode_free (mode);
continue;
}
if (crtc_mode == output_info->preferred_mode)
monitor_priv->preferred_mode = mode;
crtc = meta_output_get_assigned_crtc (output);
if (crtc)
{
const MetaCrtcConfig *crtc_config;
crtc_config = meta_crtc_get_config (crtc);
if (crtc_config && crtc_mode == crtc_config->mode)
monitor_priv->current_mode = mode;
}
}
}
MetaMonitorNormal *
meta_monitor_normal_new (MetaMonitorManager *monitor_manager,
MetaOutput *output)
{
MetaMonitorNormal *monitor_normal;
MetaMonitor *monitor;
MetaMonitorPrivate *monitor_priv;
monitor_normal = g_object_new (META_TYPE_MONITOR_NORMAL, NULL);
monitor = META_MONITOR (monitor_normal);
monitor_priv = meta_monitor_get_instance_private (monitor);
monitor_priv->backend = meta_monitor_manager_get_backend (monitor_manager);
monitor_priv->outputs = g_list_append (NULL, g_object_ref (output));
meta_output_set_monitor (output, monitor);
monitor_priv->winsys_id = meta_output_get_id (output);
meta_monitor_generate_spec (monitor);
meta_monitor_normal_generate_modes (monitor_normal);
monitor_priv->display_name = meta_monitor_make_display_name (monitor,
monitor_manager);
return monitor_normal;
}
static MetaOutput *
meta_monitor_normal_get_main_output (MetaMonitor *monitor)
{
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
return monitor_priv->outputs->data;
}
static void
meta_monitor_normal_derive_layout (MetaMonitor *monitor,
MetaRectangle *layout)
{
MetaOutput *output;
MetaCrtc *crtc;
const MetaCrtcConfig *crtc_config;
output = meta_monitor_get_main_output (monitor);
crtc = meta_output_get_assigned_crtc (output);
crtc_config = meta_crtc_get_config (crtc);
g_return_if_fail (crtc_config);
meta_rectangle_from_graphene_rect (&crtc_config->layout,
META_ROUNDING_STRATEGY_ROUND,
layout);
}
static gboolean
meta_monitor_normal_get_suggested_position (MetaMonitor *monitor,
int *x,
int *y)
{
const MetaOutputInfo *output_info =
meta_monitor_get_main_output_info (monitor);
if (!output_info->hotplug_mode_update)
return FALSE;
if (output_info->suggested_x < 0 && output_info->suggested_y < 0)
return FALSE;
if (x)
*x = output_info->suggested_x;
if (y)
*y = output_info->suggested_y;
return TRUE;
}
static void
meta_monitor_normal_calculate_crtc_pos (MetaMonitor *monitor,
MetaMonitorMode *monitor_mode,
MetaOutput *output,
MetaMonitorTransform crtc_transform,
int *out_x,
int *out_y)
{
*out_x = 0;
*out_y = 0;
}
static void
meta_monitor_normal_init (MetaMonitorNormal *monitor)
{
}
static void
meta_monitor_normal_class_init (MetaMonitorNormalClass *klass)
{
MetaMonitorClass *monitor_class = META_MONITOR_CLASS (klass);
monitor_class->get_main_output = meta_monitor_normal_get_main_output;
monitor_class->derive_layout = meta_monitor_normal_derive_layout;
monitor_class->calculate_crtc_pos = meta_monitor_normal_calculate_crtc_pos;
monitor_class->get_suggested_position = meta_monitor_normal_get_suggested_position;
}
uint32_t
meta_monitor_tiled_get_tile_group_id (MetaMonitorTiled *monitor_tiled)
{
return monitor_tiled->tile_group_id;
}
gboolean
meta_monitor_get_suggested_position (MetaMonitor *monitor,
int *x,
int *y)
{
return META_MONITOR_GET_CLASS (monitor)->get_suggested_position (monitor,
x, y);
}
static void
add_tiled_monitor_outputs (MetaGpu *gpu,
MetaMonitorTiled *monitor_tiled)
{
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (META_MONITOR (monitor_tiled));
GList *outputs;
GList *l;
outputs = meta_gpu_get_outputs (gpu);
for (l = outputs; l; l = l->next)
{
MetaOutput *output = l->data;
const MetaOutputInfo *output_info = meta_output_get_info (output);
const MetaOutputInfo *origin_output_info;
if (output_info->tile_info.group_id != monitor_tiled->tile_group_id)
continue;
origin_output_info = meta_output_get_info (monitor_tiled->origin_output);
g_warn_if_fail (output_info->subpixel_order ==
origin_output_info->subpixel_order);
monitor_priv->outputs = g_list_append (monitor_priv->outputs,
g_object_ref (output));
meta_output_set_monitor (output, META_MONITOR (monitor_tiled));
}
}
static void
calculate_tile_coordinate (MetaMonitor *monitor,
MetaOutput *output,
MetaMonitorTransform crtc_transform,
int *out_x,
int *out_y)
{
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
const MetaOutputInfo *output_info = meta_output_get_info (output);
GList *l;
int x = 0;
int y = 0;
for (l = monitor_priv->outputs; l; l = l->next)
{
const MetaOutputInfo *other_output_info = meta_output_get_info (l->data);
switch (crtc_transform)
{
case META_MONITOR_TRANSFORM_NORMAL:
case META_MONITOR_TRANSFORM_FLIPPED:
if ((other_output_info->tile_info.loc_v_tile ==
output_info->tile_info.loc_v_tile) &&
(other_output_info->tile_info.loc_h_tile <
output_info->tile_info.loc_h_tile))
x += other_output_info->tile_info.tile_w;
if ((other_output_info->tile_info.loc_h_tile ==
output_info->tile_info.loc_h_tile) &&
(other_output_info->tile_info.loc_v_tile <
output_info->tile_info.loc_v_tile))
y += other_output_info->tile_info.tile_h;
break;
case META_MONITOR_TRANSFORM_180:
case META_MONITOR_TRANSFORM_FLIPPED_180:
if ((other_output_info->tile_info.loc_v_tile ==
output_info->tile_info.loc_v_tile) &&
(other_output_info->tile_info.loc_h_tile >
output_info->tile_info.loc_h_tile))
x += other_output_info->tile_info.tile_w;
if ((other_output_info->tile_info.loc_h_tile ==
output_info->tile_info.loc_h_tile) &&
(other_output_info->tile_info.loc_v_tile >
output_info->tile_info.loc_v_tile))
y += other_output_info->tile_info.tile_h;
break;
case META_MONITOR_TRANSFORM_270:
case META_MONITOR_TRANSFORM_FLIPPED_270:
if ((other_output_info->tile_info.loc_v_tile ==
output_info->tile_info.loc_v_tile) &&
(other_output_info->tile_info.loc_h_tile >
output_info->tile_info.loc_h_tile))
y += other_output_info->tile_info.tile_w;
if ((other_output_info->tile_info.loc_h_tile ==
output_info->tile_info.loc_h_tile) &&
(other_output_info->tile_info.loc_v_tile >
output_info->tile_info.loc_v_tile))
x += other_output_info->tile_info.tile_h;
break;
case META_MONITOR_TRANSFORM_90:
case META_MONITOR_TRANSFORM_FLIPPED_90:
if ((other_output_info->tile_info.loc_v_tile ==
output_info->tile_info.loc_v_tile) &&
(other_output_info->tile_info.loc_h_tile <
output_info->tile_info.loc_h_tile))
y += other_output_info->tile_info.tile_w;
if ((other_output_info->tile_info.loc_h_tile ==
output_info->tile_info.loc_h_tile) &&
(other_output_info->tile_info.loc_v_tile <
output_info->tile_info.loc_v_tile))
x += other_output_info->tile_info.tile_h;
break;
}
}
*out_x = x;
*out_y = y;
}
static void
meta_monitor_tiled_calculate_tiled_size (MetaMonitor *monitor,
int *out_width,
int *out_height)
{
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
GList *l;
int width;
int height;
width = 0;
height = 0;
for (l = monitor_priv->outputs; l; l = l->next)
{
const MetaOutputInfo *output_info = meta_output_get_info (l->data);
if (output_info->tile_info.loc_v_tile == 0)
width += output_info->tile_info.tile_w;
if (output_info->tile_info.loc_h_tile == 0)
height += output_info->tile_info.tile_h;
}
*out_width = width;
*out_height = height;
}
static gboolean
is_monitor_mode_assigned (MetaMonitor *monitor,
MetaMonitorMode *mode)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
GList *l;
int i;
for (l = priv->outputs, i = 0; l; l = l->next, i++)
{
MetaOutput *output = l->data;
MetaMonitorCrtcMode *monitor_crtc_mode = &mode->crtc_modes[i];
MetaCrtc *crtc;
const MetaCrtcConfig *crtc_config;
crtc = meta_output_get_assigned_crtc (output);
crtc_config = crtc ? meta_crtc_get_config (crtc) : NULL;
if (monitor_crtc_mode->crtc_mode &&
(!crtc || !crtc_config ||
crtc_config->mode != monitor_crtc_mode->crtc_mode))
return FALSE;
else if (!monitor_crtc_mode->crtc_mode && crtc)
return FALSE;
}
return TRUE;
}
static gboolean
is_crtc_mode_tiled (MetaOutput *output,
MetaCrtcMode *crtc_mode)
{
const MetaOutputInfo *output_info = meta_output_get_info (output);
const MetaCrtcModeInfo *crtc_mode_info = meta_crtc_mode_get_info (crtc_mode);
return (crtc_mode_info->width == (int) output_info->tile_info.tile_w &&
crtc_mode_info->height == (int) output_info->tile_info.tile_h);
}
static MetaCrtcMode *
find_tiled_crtc_mode (MetaOutput *output,
MetaCrtcMode *reference_crtc_mode)
{
const MetaOutputInfo *output_info = meta_output_get_info (output);
const MetaCrtcModeInfo *reference_crtc_mode_info =
meta_crtc_mode_get_info (reference_crtc_mode);
MetaCrtcMode *crtc_mode;
unsigned int i;
crtc_mode = output_info->preferred_mode;
if (is_crtc_mode_tiled (output, crtc_mode))
return crtc_mode;
for (i = 0; i < output_info->n_modes; i++)
{
const MetaCrtcModeInfo *crtc_mode_info;
crtc_mode = output_info->modes[i];
crtc_mode_info = meta_crtc_mode_get_info (crtc_mode);
if (!is_crtc_mode_tiled (output, crtc_mode))
continue;
if (crtc_mode_info->refresh_rate != reference_crtc_mode_info->refresh_rate)
continue;
if (crtc_mode_info->flags != reference_crtc_mode_info->flags)
continue;
return crtc_mode;
}
return NULL;
}
static MetaMonitorMode *
create_tiled_monitor_mode (MetaMonitorTiled *monitor_tiled,
MetaCrtcMode *reference_crtc_mode,
gboolean *out_is_preferred)
{
MetaMonitor *monitor = META_MONITOR (monitor_tiled);
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
MetaMonitorModeTiled *mode;
int width, height;
GList *l;
unsigned int i;
gboolean is_preferred = TRUE;
mode = g_new0 (MetaMonitorModeTiled, 1);
mode->is_tiled = TRUE;
meta_monitor_tiled_calculate_tiled_size (monitor, &width, &height);
mode->parent.monitor = monitor;
mode->parent.spec =
meta_monitor_create_spec (monitor, width, height, reference_crtc_mode);
mode->parent.id = generate_mode_id (&mode->parent.spec);
mode->parent.crtc_modes = g_new0 (MetaMonitorCrtcMode,
g_list_length (monitor_priv->outputs));
for (l = monitor_priv->outputs, i = 0; l; l = l->next, i++)
{
MetaOutput *output = l->data;
const MetaOutputInfo *output_info = meta_output_get_info (output);
MetaCrtcMode *tiled_crtc_mode;
tiled_crtc_mode = find_tiled_crtc_mode (output, reference_crtc_mode);
if (!tiled_crtc_mode)
{
g_warning ("No tiled mode found on %s", meta_output_get_name (output));
meta_monitor_mode_free ((MetaMonitorMode *) mode);
return NULL;
}
mode->parent.crtc_modes[i] = (MetaMonitorCrtcMode) {
.output = output,
.crtc_mode = tiled_crtc_mode
};
is_preferred = (is_preferred &&
tiled_crtc_mode == output_info->preferred_mode);
}
*out_is_preferred = is_preferred;
return (MetaMonitorMode *) mode;
}
static void
generate_tiled_monitor_modes (MetaMonitorTiled *monitor_tiled)
{
MetaMonitor *monitor = META_MONITOR (monitor_tiled);
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
MetaOutput *main_output;
const MetaOutputInfo *main_output_info;
GList *tiled_modes = NULL;
unsigned int i;
MetaMonitorMode *best_mode = NULL;
GList *l;
main_output = meta_monitor_get_main_output (META_MONITOR (monitor_tiled));
main_output_info = meta_output_get_info (main_output);
for (i = 0; i < main_output_info->n_modes; i++)
{
MetaCrtcMode *reference_crtc_mode = main_output_info->modes[i];
MetaMonitorMode *mode;
gboolean is_preferred;
if (!is_crtc_mode_tiled (main_output, reference_crtc_mode))
continue;
mode = create_tiled_monitor_mode (monitor_tiled, reference_crtc_mode,
&is_preferred);
if (!mode)
continue;
tiled_modes = g_list_append (tiled_modes, mode);
if (is_monitor_mode_assigned (monitor, mode))
monitor_priv->current_mode = mode;
if (is_preferred)
monitor_priv->preferred_mode = mode;
}
while ((l = tiled_modes))
{
MetaMonitorMode *mode = l->data;
tiled_modes = g_list_remove_link (tiled_modes, l);
if (!meta_monitor_add_mode (monitor, mode, FALSE))
{
meta_monitor_mode_free (mode);
continue;
}
if (!monitor_priv->preferred_mode)
{
if (!best_mode ||
mode->spec.refresh_rate > best_mode->spec.refresh_rate)
best_mode = mode;
}
}
if (best_mode)
monitor_priv->preferred_mode = best_mode;
}
static MetaMonitorMode *
create_untiled_monitor_mode (MetaMonitorTiled *monitor_tiled,
MetaOutput *main_output,
MetaCrtcMode *crtc_mode)
{
MetaMonitor *monitor = META_MONITOR (monitor_tiled);
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
MetaMonitorModeTiled *mode;
const MetaCrtcModeInfo *crtc_mode_info;
GList *l;
int i;
if (is_crtc_mode_tiled (main_output, crtc_mode))
return NULL;
mode = g_new0 (MetaMonitorModeTiled, 1);
mode->is_tiled = FALSE;
mode->parent.monitor = monitor;
crtc_mode_info = meta_crtc_mode_get_info (crtc_mode);
mode->parent.spec = meta_monitor_create_spec (monitor,
crtc_mode_info->width,
crtc_mode_info->height,
crtc_mode);
mode->parent.id = generate_mode_id (&mode->parent.spec);
mode->parent.crtc_modes = g_new0 (MetaMonitorCrtcMode,
g_list_length (monitor_priv->outputs));
for (l = monitor_priv->outputs, i = 0; l; l = l->next, i++)
{
MetaOutput *output = l->data;
if (output == main_output)
{
mode->parent.crtc_modes[i] = (MetaMonitorCrtcMode) {
.output = output,
.crtc_mode = crtc_mode
};
}
else
{
mode->parent.crtc_modes[i] = (MetaMonitorCrtcMode) {
.output = output,
.crtc_mode = NULL
};
}
}
return &mode->parent;
}
static int
count_untiled_crtc_modes (MetaOutput *output)
{
const MetaOutputInfo *output_info = meta_output_get_info (output);
int count;
unsigned int i;
count = 0;
for (i = 0; i < output_info->n_modes; i++)
{
MetaCrtcMode *crtc_mode = output_info->modes[i];
if (!is_crtc_mode_tiled (output, crtc_mode))
count++;
}
return count;
}
static MetaOutput *
find_untiled_output (MetaMonitorTiled *monitor_tiled)
{
MetaMonitor *monitor = META_MONITOR (monitor_tiled);
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
MetaOutput *best_output;
int best_untiled_crtc_mode_count;
GList *l;
best_output = monitor_tiled->origin_output;
best_untiled_crtc_mode_count =
count_untiled_crtc_modes (monitor_tiled->origin_output);
for (l = monitor_priv->outputs; l; l = l->next)
{
MetaOutput *output = l->data;
int untiled_crtc_mode_count;
if (output == monitor_tiled->origin_output)
continue;
untiled_crtc_mode_count = count_untiled_crtc_modes (output);
if (untiled_crtc_mode_count > best_untiled_crtc_mode_count)
{
best_untiled_crtc_mode_count = untiled_crtc_mode_count;
best_output = output;
}
}
return best_output;
}
static void
generate_untiled_monitor_modes (MetaMonitorTiled *monitor_tiled)
{
MetaMonitor *monitor = META_MONITOR (monitor_tiled);
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
MetaOutput *main_output;
const MetaOutputInfo *main_output_info;
unsigned int i;
main_output = meta_monitor_get_main_output (monitor);
main_output_info = meta_output_get_info (main_output);
for (i = 0; i < main_output_info->n_modes; i++)
{
MetaCrtcMode *crtc_mode = main_output_info->modes[i];
MetaMonitorMode *mode;
mode = create_untiled_monitor_mode (monitor_tiled,
main_output,
crtc_mode);
if (!mode)
continue;
if (!meta_monitor_add_mode (monitor, mode, FALSE))
{
meta_monitor_mode_free (mode);
continue;
}
if (is_monitor_mode_assigned (monitor, mode))
{
g_assert (!monitor_priv->current_mode);
monitor_priv->current_mode = mode;
}
if (!monitor_priv->preferred_mode &&
crtc_mode == main_output_info->preferred_mode)
monitor_priv->preferred_mode = mode;
}
}
static MetaMonitorMode *
find_best_mode (MetaMonitor *monitor)
{
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
MetaMonitorMode *best_mode = NULL;
GList *l;
for (l = monitor_priv->modes; l; l = l->next)
{
MetaMonitorMode *mode = l->data;
int area, best_area;
if (!best_mode)
{
best_mode = mode;
continue;
}
area = mode->spec.width * mode->spec.height;
best_area = best_mode->spec.width * best_mode->spec.height;
if (area > best_area)
{
best_mode = mode;
continue;
}
if (mode->spec.refresh_rate > best_mode->spec.refresh_rate)
{
best_mode = mode;
continue;
}
}
return best_mode;
}
static void
meta_monitor_tiled_generate_modes (MetaMonitorTiled *monitor_tiled)
{
MetaMonitor *monitor = META_MONITOR (monitor_tiled);
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
/*
* Tiled monitors may look a bit different from each other, depending on the
* monitor itself, the driver, etc.
*
* On some, the tiled modes will be the preferred CRTC modes, and running
* untiled is done by only enabling (0, 0) tile. In this case, things are
* pretty straight forward.
*
* Other times a monitor may have some bogus mode preferred on the main tile,
* and an untiled mode preferred on the non-main tile, and there seems to be
* no guarantee that the (0, 0) tile is the one that should drive the
* non-tiled mode.
*
* To handle both these cases, the following hueristics are implemented:
*
* 1) Find all the tiled CRTC modes of the (0, 0) tile, and create tiled
* monitor modes for all tiles based on these.
* 2) If there is any tiled monitor mode combination where all CRTC modes
* are the preferred ones, that one is marked as preferred.
* 3) If there is no preferred mode determined so far, assume the tiled
* monitor mode with the highest refresh rate is preferred.
* 4) Find the tile with highest number of untiled CRTC modes available,
* assume this is the one driving the monitor in untiled mode, and
* create monitor modes for all untiled CRTC modes of that tile. If
* there is still no preferred mode, set any untiled mode as preferred
* if the CRTC mode is marked as such.
* 5) If at this point there is still no preferred mode, just pick the one
* with the highest number of pixels and highest refresh rate.
*
* Note that this ignores the preference if the preference is a non-tiled
* mode. This seems to be the case on some systems, where the user tends to
* manually set up the tiled mode anyway.
*/
generate_tiled_monitor_modes (monitor_tiled);
if (!monitor_priv->preferred_mode)
g_warning ("Tiled monitor on %s didn't have any tiled modes",
monitor_priv->spec->connector);
generate_untiled_monitor_modes (monitor_tiled);
if (!monitor_priv->preferred_mode)
{
g_warning ("Tiled monitor on %s didn't have a valid preferred mode",
monitor_priv->spec->connector);
monitor_priv->preferred_mode = find_best_mode (monitor);
}
}
MetaMonitorTiled *
meta_monitor_tiled_new (MetaMonitorManager *monitor_manager,
MetaOutput *output)
{
const MetaOutputInfo *output_info = meta_output_get_info (output);
MetaMonitorTiled *monitor_tiled;
MetaMonitor *monitor;
MetaMonitorPrivate *monitor_priv;
monitor_tiled = g_object_new (META_TYPE_MONITOR_TILED, NULL);
monitor = META_MONITOR (monitor_tiled);
monitor_priv = meta_monitor_get_instance_private (monitor);
monitor_priv->backend = meta_monitor_manager_get_backend (monitor_manager);
monitor_tiled->tile_group_id = output_info->tile_info.group_id;
monitor_priv->winsys_id = meta_output_get_id (output);
monitor_tiled->origin_output = output;
add_tiled_monitor_outputs (meta_output_get_gpu (output), monitor_tiled);
monitor_tiled->main_output = find_untiled_output (monitor_tiled);
meta_monitor_generate_spec (monitor);
monitor_tiled->monitor_manager = monitor_manager;
meta_monitor_manager_tiled_monitor_added (monitor_manager,
META_MONITOR (monitor_tiled));
meta_monitor_tiled_generate_modes (monitor_tiled);
monitor_priv->display_name = meta_monitor_make_display_name (monitor,
monitor_manager);
return monitor_tiled;
}
static MetaOutput *
meta_monitor_tiled_get_main_output (MetaMonitor *monitor)
{
MetaMonitorTiled *monitor_tiled = META_MONITOR_TILED (monitor);
return monitor_tiled->main_output;
}
static void
meta_monitor_tiled_derive_layout (MetaMonitor *monitor,
MetaRectangle *layout)
{
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
GList *l;
float min_x, min_y, max_x, max_y;
min_x = FLT_MAX;
min_y = FLT_MAX;
max_x = 0.0;
max_y = 0.0;
for (l = monitor_priv->outputs; l; l = l->next)
{
MetaOutput *output = l->data;
MetaCrtc *crtc;
const MetaCrtcConfig *crtc_config;
const graphene_rect_t *crtc_layout;
crtc = meta_output_get_assigned_crtc (output);
if (!crtc)
continue;
crtc_config = meta_crtc_get_config (crtc);
g_return_if_fail (crtc_config);
crtc_layout = &crtc_config->layout;
min_x = MIN (crtc_layout->origin.x, min_x);
min_y = MIN (crtc_layout->origin.y, min_y);
max_x = MAX (crtc_layout->origin.x + crtc_layout->size.width, max_x);
max_y = MAX (crtc_layout->origin.y + crtc_layout->size.height, max_y);
}
*layout = (MetaRectangle) {
.x = roundf (min_x),
.y = roundf (min_y),
.width = roundf (max_x - min_x),
.height = roundf (max_y - min_y)
};
}
static gboolean
meta_monitor_tiled_get_suggested_position (MetaMonitor *monitor,
int *x,
int *y)
{
return FALSE;
}
static void
meta_monitor_tiled_calculate_crtc_pos (MetaMonitor *monitor,
MetaMonitorMode *monitor_mode,
MetaOutput *output,
MetaMonitorTransform crtc_transform,
int *out_x,
int *out_y)
{
MetaMonitorModeTiled *mode_tiled = (MetaMonitorModeTiled *) monitor_mode;
if (mode_tiled->is_tiled)
{
calculate_tile_coordinate (monitor, output, crtc_transform,
out_x, out_y);
}
else
{
*out_x = 0;
*out_y = 0;
}
}
static void
meta_monitor_tiled_finalize (GObject *object)
{
MetaMonitorTiled *monitor_tiled = META_MONITOR_TILED (object);
meta_monitor_manager_tiled_monitor_removed (monitor_tiled->monitor_manager,
META_MONITOR (monitor_tiled));
G_OBJECT_CLASS (meta_monitor_tiled_parent_class)->finalize (object);
}
static void
meta_monitor_tiled_init (MetaMonitorTiled *monitor)
{
}
static void
meta_monitor_tiled_class_init (MetaMonitorTiledClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
MetaMonitorClass *monitor_class = META_MONITOR_CLASS (klass);
object_class->finalize = meta_monitor_tiled_finalize;
monitor_class->get_main_output = meta_monitor_tiled_get_main_output;
monitor_class->derive_layout = meta_monitor_tiled_derive_layout;
monitor_class->calculate_crtc_pos = meta_monitor_tiled_calculate_crtc_pos;
monitor_class->get_suggested_position = meta_monitor_tiled_get_suggested_position;
}
static void
meta_monitor_mode_free (MetaMonitorMode *monitor_mode)
{
g_free (monitor_mode->id);
g_free (monitor_mode->crtc_modes);
g_free (monitor_mode);
}
MetaMonitorSpec *
meta_monitor_get_spec (MetaMonitor *monitor)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
return priv->spec;
}
MetaLogicalMonitor *
meta_monitor_get_logical_monitor (MetaMonitor *monitor)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
return priv->logical_monitor;
}
MetaMonitorMode *
meta_monitor_get_mode_from_id (MetaMonitor *monitor,
const char *monitor_mode_id)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
return g_hash_table_lookup (priv->mode_ids, monitor_mode_id);
}
static gboolean
meta_monitor_mode_spec_equals (MetaMonitorModeSpec *monitor_mode_spec,
MetaMonitorModeSpec *other_monitor_mode_spec)
{
return (monitor_mode_spec->width == other_monitor_mode_spec->width &&
monitor_mode_spec->height == other_monitor_mode_spec->height &&
ABS (monitor_mode_spec->refresh_rate -
other_monitor_mode_spec->refresh_rate) < MAXIMUM_REFRESH_RATE_DIFF &&
monitor_mode_spec->flags == other_monitor_mode_spec->flags);
}
MetaMonitorMode *
meta_monitor_get_mode_from_spec (MetaMonitor *monitor,
MetaMonitorModeSpec *monitor_mode_spec)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
GList *l;
for (l = priv->modes; l; l = l->next)
{
MetaMonitorMode *monitor_mode = l->data;
if (meta_monitor_mode_spec_equals (monitor_mode_spec,
&monitor_mode->spec))
return monitor_mode;
}
return NULL;
}
MetaMonitorMode *
meta_monitor_get_preferred_mode (MetaMonitor *monitor)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
return priv->preferred_mode;
}
MetaMonitorMode *
meta_monitor_get_current_mode (MetaMonitor *monitor)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
return priv->current_mode;
}
static gboolean
is_current_mode_known (MetaMonitor *monitor)
{
MetaOutput *output;
MetaCrtc *crtc;
output = meta_monitor_get_main_output (monitor);
crtc = meta_output_get_assigned_crtc (output);
return (meta_monitor_is_active (monitor) ==
(crtc && meta_crtc_get_config (crtc)));
}
void
meta_monitor_derive_current_mode (MetaMonitor *monitor)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
MetaMonitorMode *current_mode = NULL;
GList *l;
for (l = priv->modes; l; l = l->next)
{
MetaMonitorMode *mode = l->data;
if (is_monitor_mode_assigned (monitor, mode))
{
current_mode = mode;
break;
}
}
priv->current_mode = current_mode;
g_warn_if_fail (is_current_mode_known (monitor));
}
void
meta_monitor_set_current_mode (MetaMonitor *monitor,
MetaMonitorMode *mode)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
priv->current_mode = mode;
}
GList *
meta_monitor_get_modes (MetaMonitor *monitor)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
return priv->modes;
}
void
meta_monitor_calculate_crtc_pos (MetaMonitor *monitor,
MetaMonitorMode *monitor_mode,
MetaOutput *output,
MetaMonitorTransform crtc_transform,
int *out_x,
int *out_y)
{
META_MONITOR_GET_CLASS (monitor)->calculate_crtc_pos (monitor,
monitor_mode,
output,
crtc_transform,
out_x,
out_y);
}
/* The minimum resolution at which we turn on a window-scale of 2 */
#define HIDPI_LIMIT 192
/*
* The minimum screen height at which we turn on a window-scale of 2;
* below this there just isn't enough vertical real estate for GNOME
* apps to work, and it's better to just be tiny
*/
#define HIDPI_MIN_HEIGHT 1200
/* From http://en.wikipedia.org/wiki/4K_resolution#Resolutions_of_common_formats */
#define SMALLEST_4K_WIDTH 3656
static float
calculate_scale (MetaMonitor *monitor,
MetaMonitorMode *monitor_mode,
MetaMonitorScalesConstraint constraints)
{
int resolution_width, resolution_height;
int width_mm, height_mm;
int scale;
scale = 1.0;
meta_monitor_mode_get_resolution (monitor_mode,
&resolution_width,
&resolution_height);
if (resolution_height < HIDPI_MIN_HEIGHT)
return scale;
/* 4K TV */
switch (meta_monitor_get_connector_type (monitor))
{
case META_CONNECTOR_TYPE_HDMIA:
case META_CONNECTOR_TYPE_HDMIB:
if (resolution_width < SMALLEST_4K_WIDTH)
return scale;
break;
default:
break;
}
meta_monitor_get_physical_dimensions (monitor, &width_mm, &height_mm);
/*
* Somebody encoded the aspect ratio (16/9 or 16/10) instead of the physical
* size.
*/
if (meta_monitor_has_aspect_as_size (monitor))
return scale;
if (width_mm > 0 && height_mm > 0)
{
double dpi_x, dpi_y;
dpi_x = (double) resolution_width / (width_mm / 25.4);
dpi_y = (double) resolution_height / (height_mm / 25.4);
/*
* We don't completely trust these values so both must be high, and never
* pick higher ratio than 2 automatically.
*/
if (dpi_x > HIDPI_LIMIT && dpi_y > HIDPI_LIMIT)
scale = 2.0;
}
return scale;
}
float
meta_monitor_calculate_mode_scale (MetaMonitor *monitor,
MetaMonitorMode *monitor_mode,
MetaMonitorScalesConstraint constraints)
{
MetaBackend *backend = meta_get_backend ();
MetaSettings *settings = meta_backend_get_settings (backend);
int global_scaling_factor;
if (meta_settings_get_global_scaling_factor (settings,
&global_scaling_factor))
return global_scaling_factor;
return calculate_scale (monitor, monitor_mode, constraints);
}
static gboolean
is_logical_size_large_enough (int width,
int height)
{
return width * height >= MINIMUM_LOGICAL_AREA;
}
static gboolean
is_scale_valid_for_size (float width,
float height,
float scale)
{
if (scale < MINIMUM_SCALE_FACTOR || scale > MAXIMUM_SCALE_FACTOR)
return FALSE;
return is_logical_size_large_enough (floorf (width / scale),
floorf (height / scale));
}
gboolean
meta_monitor_mode_should_be_advertised (MetaMonitorMode *monitor_mode)
{
MetaMonitorMode *preferred_mode;
g_return_val_if_fail (monitor_mode != NULL, FALSE);
preferred_mode = meta_monitor_get_preferred_mode (monitor_mode->monitor);
if (monitor_mode->spec.width == preferred_mode->spec.width &&
monitor_mode->spec.height == preferred_mode->spec.height)
return TRUE;
return is_logical_size_large_enough (monitor_mode->spec.width,
monitor_mode->spec.height);
}
static float
get_closest_scale_factor_for_resolution (float width,
float height,
float scale,
float threshold)
{
unsigned int i, j;
float scaled_h;
float scaled_w;
float best_scale;
int base_scaled_w;
gboolean found_one;
best_scale = 0;
if (!is_scale_valid_for_size (width, height, scale))
return best_scale;
if (fmodf (width, scale) == 0.0 && fmodf (height, scale) == 0.0)
return scale;
i = 0;
found_one = FALSE;
base_scaled_w = floorf (width / scale);
do
{
for (j = 0; j < 2; j++)
{
float current_scale;
int offset = i * (j ? 1 : -1);
scaled_w = base_scaled_w + offset;
current_scale = width / scaled_w;
scaled_h = height / current_scale;
if (current_scale >= scale + threshold ||
current_scale <= scale - threshold ||
current_scale < MINIMUM_SCALE_FACTOR ||
current_scale > MAXIMUM_SCALE_FACTOR)
{
return best_scale;
}
if (floorf (scaled_h) == scaled_h)
{
found_one = TRUE;
if (fabsf (current_scale - scale) < fabsf (best_scale - scale))
best_scale = current_scale;
}
}
i++;
}
while (!found_one);
return best_scale;
}
float *
meta_monitor_calculate_supported_scales (MetaMonitor *monitor,
MetaMonitorMode *monitor_mode,
MetaMonitorScalesConstraint constraints,
int *n_supported_scales)
{
unsigned int i, j;
int width, height;
GArray *supported_scales;
supported_scales = g_array_new (FALSE, FALSE, sizeof (float));
meta_monitor_mode_get_resolution (monitor_mode, &width, &height);
for (i = floorf (MINIMUM_SCALE_FACTOR);
i <= ceilf (MAXIMUM_SCALE_FACTOR);
i++)
{
if (constraints & META_MONITOR_SCALES_CONSTRAINT_NO_FRAC)
{
if (is_scale_valid_for_size (width, height, i))
{
float scale = i;
g_array_append_val (supported_scales, scale);
}
}
else
{
float max_bound;
if (i == floorf (MINIMUM_SCALE_FACTOR) ||
i == ceilf (MAXIMUM_SCALE_FACTOR))
max_bound = SCALE_FACTORS_STEPS;
else
max_bound = SCALE_FACTORS_STEPS / 2.0;
for (j = 0; j < SCALE_FACTORS_PER_INTEGER; j++)
{
float scale;
float scale_value = i + j * SCALE_FACTORS_STEPS;
scale = get_closest_scale_factor_for_resolution (width, height,
scale_value,
max_bound);
if (scale > 0.0)
g_array_append_val (supported_scales, scale);
}
}
}
if (supported_scales->len == 0)
{
float fallback_scale;
fallback_scale = 1.0;
g_array_append_val (supported_scales, fallback_scale);
}
*n_supported_scales = supported_scales->len;
return (float *) g_array_free (supported_scales, FALSE);
}
MetaMonitorModeSpec *
meta_monitor_mode_get_spec (MetaMonitorMode *monitor_mode)
{
return &monitor_mode->spec;
}
const char *
meta_monitor_mode_get_id (MetaMonitorMode *monitor_mode)
{
return monitor_mode->id;
}
void
meta_monitor_mode_get_resolution (MetaMonitorMode *monitor_mode,
int *width,
int *height)
{
*width = monitor_mode->spec.width;
*height = monitor_mode->spec.height;
}
float
meta_monitor_mode_get_refresh_rate (MetaMonitorMode *monitor_mode)
{
return monitor_mode->spec.refresh_rate;
}
MetaCrtcModeFlag
meta_monitor_mode_get_flags (MetaMonitorMode *monitor_mode)
{
return monitor_mode->spec.flags;
}
gboolean
meta_monitor_mode_foreach_crtc (MetaMonitor *monitor,
MetaMonitorMode *mode,
MetaMonitorModeFunc func,
gpointer user_data,
GError **error)
{
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
GList *l;
int i;
for (l = monitor_priv->outputs, i = 0; l; l = l->next, i++)
{
MetaMonitorCrtcMode *monitor_crtc_mode = &mode->crtc_modes[i];
if (!monitor_crtc_mode->crtc_mode)
continue;
if (!func (monitor, mode, monitor_crtc_mode, user_data, error))
return FALSE;
}
return TRUE;
}
gboolean
meta_monitor_mode_foreach_output (MetaMonitor *monitor,
MetaMonitorMode *mode,
MetaMonitorModeFunc func,
gpointer user_data,
GError **error)
{
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
GList *l;
int i;
for (l = monitor_priv->outputs, i = 0; l; l = l->next, i++)
{
MetaMonitorCrtcMode *monitor_crtc_mode = &mode->crtc_modes[i];
if (!func (monitor, mode, monitor_crtc_mode, user_data, error))
return FALSE;
}
return TRUE;
}
MetaMonitorCrtcMode *
meta_monitor_get_crtc_mode_for_output (MetaMonitor *monitor,
MetaMonitorMode *mode,
MetaOutput *output)
{
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
GList *l;
int i;
for (l = monitor_priv->outputs, i = 0; l; l = l->next, i++)
{
MetaMonitorCrtcMode *monitor_crtc_mode = &mode->crtc_modes[i];
if (monitor_crtc_mode->output == output)
return monitor_crtc_mode;
}
g_warn_if_reached ();
return NULL;
}
const char *
meta_monitor_get_display_name (MetaMonitor *monitor)
{
MetaMonitorPrivate *monitor_priv =
meta_monitor_get_instance_private (monitor);
return monitor_priv->display_name;
}
void
meta_monitor_set_logical_monitor (MetaMonitor *monitor,
MetaLogicalMonitor *logical_monitor)
{
MetaMonitorPrivate *priv = meta_monitor_get_instance_private (monitor);
priv->logical_monitor = logical_monitor;
}
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