GLFWvidmode* _glfwPlatformGetVideoModes(_GLFWmonitor* monitor, int* found)
{
int i;
GLFWvidmode* modes = NULL;
MirDisplayConfiguration* displayConfig =
mir_connection_create_display_config(_glfw.mir.connection);
for (i = 0; i < displayConfig->num_outputs; i++)
{
const MirDisplayOutput* out = displayConfig->outputs + i;
if (out->output_id != monitor->mir.output_id)
continue;
modes = calloc(out->num_modes, sizeof(GLFWvidmode));
for (*found = 0; *found < out->num_modes; (*found)++)
{
modes[*found].width = out->modes[*found].horizontal_resolution;
modes[*found].height = out->modes[*found].vertical_resolution;
modes[*found].refreshRate = out->modes[*found].refresh_rate;
modes[*found].redBits = 8;
modes[*found].greenBits = 8;
modes[*found].blueBits = 8;
}
break;
}
mir_display_config_destroy(displayConfig);
return modes;
}
// Poll for changes in the set of connected monitors
//
void _glfwPollMonitorsMir(void)
{
int i;
MirDisplayConfiguration* displayConfig =
mir_connection_create_display_config(_glfw.mir.connection);
for (i = 0; i < displayConfig->num_outputs; i++)
{
const MirDisplayOutput* out = displayConfig->outputs + i;
if (out->used &&
out->connected &&
out->num_modes &&
out->current_mode < out->num_modes)
{
_GLFWmonitor* monitor = _glfwAllocMonitor("Unknown",
out->physical_width_mm,
out->physical_height_mm);
monitor->mir.x = out->position_x;
monitor->mir.y = out->position_y;
monitor->mir.outputId = out->output_id;
monitor->mir.curMode = out->current_mode;
monitor->modes = _glfwPlatformGetVideoModes(monitor, &monitor->modeCount);
_glfwInputMonitor(monitor, GLFW_CONNECTED, _GLFW_INSERT_LAST);
}
}
mir_display_config_destroy(displayConfig);
}
MirDisplayConnection::MirDisplayConnection()
: connection_(nullptr),
output_id_(-1),
vertical_resolution_(0),
horizontal_resolution_(0) {
auto xdg_runtime_dir = ::getenv("XDG_RUNTIME_DIR");
if (!xdg_runtime_dir)
BOOST_THROW_EXCEPTION(std::runtime_error("Failed to find XDG_RUNTIME_DIR"));
std::string socket_path = xdg_runtime_dir;
socket_path += "/mir_socket";
connection_ = mir_connect_sync(socket_path.c_str(), "anbox");
if (!mir_connection_is_valid(connection_)) {
std::string msg;
msg += "Failed to connect with Mir server: ";
msg += mir_connection_get_error_message(connection_);
BOOST_THROW_EXCEPTION(std::runtime_error(msg.c_str()));
}
mir_connection_set_display_config_change_callback(
connection_,
[](MirConnection *connection, void *context) {
auto thiz = reinterpret_cast<MirDisplayConnection *>(context);
DEBUG("");
},
this);
MirDisplayConfiguration *display_config =
mir_connection_create_display_config(connection_);
const MirDisplayOutput *output = find_active_output(display_config);
if (!output)
BOOST_THROW_EXCEPTION(
std::runtime_error("Failed to find active output display"));
DEBUG("Selecting output id %d", output->output_id);
output_id_ = output->output_id;
const MirDisplayMode *mode = &output->modes[output->current_mode];
vertical_resolution_ = mode->vertical_resolution;
horizontal_resolution_ = mode->horizontal_resolution;
mir_display_config_destroy(display_config);
}
// Regression test for LP:#1340669
// Test is not deterministic since we are testing a race, but failure can be
// reproduced easily with repeated runs.
TEST_F(ClientWithCustomDisplayConfiguration,
does_not_deadlock_server_with_existing_client_when_disconnecting)
{
auto second_connection = mir_connect_sync(new_connection().c_str(), __PRETTY_FUNCTION__);
auto second_surface = mtf::make_any_surface(connection);
ASSERT_TRUE(mir_surface_is_valid(second_surface));
auto configuration = mir_connection_create_display_config(connection);
mir_wait_for(mir_connection_apply_display_config(connection, configuration));
EXPECT_STREQ("", mir_connection_get_error_message(connection));
mir_display_config_destroy(configuration);
mir_connection_release(second_connection);
// Server (and therefore the test) will deadlock and won't be able to
// shut down without the fix. It's not ideal to deadlock on test failure,
// but it's the best check we have at the moment.
}
SDL_Surface* Mir_SetVideoMode(_THIS, SDL_Surface* current,
int width, int height, int bpp, Uint32 flags)
{
if (this->hidden->surface && mir_surface_is_valid(this->hidden->surface))
{
mir_surface_release_sync(this->hidden->surface);
this->hidden->surface = NULL;
}
Uint32 output_id = mir_display_output_id_invalid;
if (flags & SDL_FULLSCREEN)
{
MirDisplayConfiguration* display_config =
mir_connection_create_display_config(this->hidden->connection);
Uint32 fallback_output_id = mir_display_output_id_invalid;
Uint32 d;
Uint32 m;
this->hidden->mode_changed = SDL_FALSE;
for (d = 0; d < display_config->num_outputs; ++d)
{
MirDisplayOutput const* out = display_config->outputs + d;
if (out->used && out->connected)
{
if (out->modes[out->current_mode].horizontal_resolution == width &&
out->modes[out->current_mode].vertical_resolution == height)
{
output_id = out->output_id;
break;
}
if (fallback_output_id == mir_display_output_id_invalid &&
out->modes[out->current_mode].horizontal_resolution >= width &&
out->modes[out->current_mode].vertical_resolution >= height)
{
fallback_output_id = out->output_id;
}
}
}
if (output_id == mir_display_output_id_invalid)
{
for (d = 0; d < display_config->num_outputs; ++d)
{
MirDisplayOutput* out = display_config->outputs + d;
if (out->used && out->connected)
{
for (m = 0; m < out->num_modes; ++m)
{
if (out->modes[m].horizontal_resolution == width &&
out->modes[m].vertical_resolution == height)
{
this->hidden->mode_changed = SDL_TRUE;
output_id = out->output_id;
out->current_mode = m;
mir_wait_for(
mir_connection_apply_display_config(this->hidden->connection,
display_config)
);
break;
}
}
}
}
}
if (fallback_output_id == mir_display_output_id_invalid)
{
/* There's no native resolution for the requested format, so let's
* just ensure we've an output large enough to show it */
for (d = 0; d < display_config->num_outputs; ++d)
{
MirDisplayOutput* out = display_config->outputs + d;
if (out->used && out->connected)
{
for (m = 0; m < out->num_modes; ++m)
{
if (out->modes[m].horizontal_resolution >= width &&
out->modes[m].vertical_resolution >= height)
{
this->hidden->mode_changed = SDL_TRUE;
fallback_output_id = out->output_id;
out->current_mode = m;
mir_wait_for(
mir_connection_apply_display_config(this->hidden->connection,
display_config)
);
break;
}
}
}
}
/* Setting output_id = fallback_output_id here seems to cause
* troubles to mir in creating a new surface */
}
mir_display_config_destroy(display_config);
if (output_id == mir_display_output_id_invalid &&
fallback_output_id == mir_display_output_id_invalid)
{
SDL_SetError("Impossible to find a valid output for mode %dx%d",
width, height);
return NULL;
}
}
else if (this->hidden->mode_changed)
{
Uint32 d;
SDL_bool any_changed = SDL_FALSE;
MirDisplayConfiguration* display_config =
mir_connection_create_display_config(this->hidden->connection);
for (d = 0; d < display_config->num_outputs; ++d)
{
MirDisplayOutput* out = display_config->outputs + d;
if (out->used && out->connected)
{
if (out->current_mode != out->preferred_mode)
{
out->current_mode = out->preferred_mode;
any_changed = SDL_TRUE;
}
}
}
if (any_changed)
{
mir_wait_for(
mir_connection_apply_display_config(this->hidden->connection,
display_config)
);
}
this->hidden->mode_changed = SDL_FALSE;
mir_display_config_destroy(display_config);
}
MirSurfaceParameters surfaceparm =
{
.name = "MirSurface",
.width = width,
.height = height,
.pixel_format = this->hidden->pixel_format,
.output_id = output_id,
.buffer_usage = (flags & SDL_OPENGL) ? mir_buffer_usage_hardware :
mir_buffer_usage_software,
};
this->hidden->surface =
mir_connection_create_surface_sync(this->hidden->connection, &surfaceparm);
if (!mir_surface_is_valid(this->hidden->surface))
{
const char* error = mir_surface_get_error_message(this->hidden->surface);
SDL_SetError("Failed to created a mir surface: %s", error);
mir_surface_release_sync(this->hidden->surface);
return NULL;
}
MirEventDelegate delegate = {
Mir_HandleSurfaceEvent,
NULL
};
mir_surface_set_event_handler(this->hidden->surface, &delegate);
if (flags & SDL_OPENGL)
{
current->flags |= SDL_OPENGL;
if (Mir_GL_CreateESurface(this) < 0)
{
SDL_SetError("Could not Create EGL Surface");
return NULL;
}
if (Mir_GL_CreateContext(this) < 0)
{
SDL_SetError("Could not Create GL Context");
return NULL;
}
}
else
{
if ((current->w != width || current->h != height))
{
current->pixels = NULL;
current->w = width;
current->h = height;
current->pitch = SDL_CalculatePitch(current);
current->pixels = SDL_calloc(1, current->h * current->pitch);
if (!current->pixels)
{
SDL_OutOfMemory();
return NULL;
}
this->UpdateRects = Mir_UpdateRects;
}
}
return current;
}
static void Mir_ModeListFree(_THIS)
{
if (this->hidden->modelist)
{
int i = 0;
while (this->hidden->modelist[i] != NULL)
{
SDL_free(this->hidden->modelist[i]);
++i;
}
SDL_free(this->hidden->modelist);
this->hidden->modelist = NULL;
}
}
static void Mir_ModeListUpdate(_THIS)
{
Uint32 d, m;
Uint32 valid_outputs = 0;
Mir_ModeListFree(this);
MirDisplayConfiguration* display_config =
mir_connection_create_display_config(this->hidden->connection);
for (d = 0; d < display_config->num_outputs; d++)
{
MirDisplayOutput const* out = display_config->outputs + d;
if (out->used && out->connected)
valid_outputs += out->num_modes;
}
this->hidden->modelist = SDL_calloc(valid_outputs + 1, sizeof(SDL_Rect*));
valid_outputs = 0;
for (d = 0; d < display_config->num_outputs; ++d)
{
MirDisplayOutput const* out = display_config->outputs + d;
if (out->used && out->connected)
{
for (m = 0; m < out->num_modes; ++m)
{
SDL_Rect* sdl_output = SDL_calloc(1, sizeof(SDL_Rect));
sdl_output->x = out->position_x;
sdl_output->y = out->position_y;
sdl_output->w = out->modes[m].horizontal_resolution;
sdl_output->h = out->modes[m].vertical_resolution;
this->hidden->modelist[valid_outputs] = sdl_output;
++valid_outputs;
}
}
}
this->hidden->modelist[valid_outputs] = NULL;
mir_display_config_destroy(display_config);
}
