FreeRDP/uwac/libuwac/uwac-output.c

/*
 * Copyright © 2014 David FORT <contact@hardening-consulting.com>
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that copyright
 * notice and this permission notice appear in supporting documentation, and
 * that the name of the copyright holders not be used in advertising or
 * publicity pertaining to distribution of the software without specific,
 * written prior permission.  The copyright holders make no representations
 * about the suitability of this software for any purpose.  It is provided "as
 * is" without express or implied warranty.
 *
 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THIS SOFTWARE.
 */
#include "uwac-priv.h"
#include "uwac-utils.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>

#define TARGET_OUTPUT_INTERFACE 2U

static bool dupstr(char** dst, const char* src)
{
	assert(dst);
	free(*dst);
	*dst = NULL;
	if (!src)
		return true;
	*dst = strdup(src);
	return *dst != NULL;
}

static void output_handle_geometry(void* data, struct wl_output* wl_output, int x, int y,
                                   int physical_width, int physical_height, int subpixel,
                                   const char* make, const char* model, int transform)
{
	UwacOutput* output = data;
	assert(output);

	output->position.x = x;
	output->position.y = y;
	output->transform = transform;

	if (!dupstr(&output->make, make))
	{
		assert(uwacErrorHandler(output->display, UWAC_ERROR_NOMEMORY, "%s: unable to strdup make\n",
		                        __func__));
	}

	if (!dupstr(&output->model, model))
	{
		assert(uwacErrorHandler(output->display, UWAC_ERROR_NOMEMORY,
		                        "%s: unable to strdup model\n", __func__));
	}

	UwacEvent* event = UwacDisplayNewEvent(output->display, UWAC_EVENT_OUTPUT_GEOMETRY);
	event->output_geometry.output = output;
	event->output_geometry.x = x;
	event->output_geometry.y = y;
	event->output_geometry.physical_width = physical_width;
	event->output_geometry.physical_height = physical_height;
	event->output_geometry.subpixel = subpixel;
	event->output_geometry.make = output->make;
	event->output_geometry.model = output->model;
	event->output_geometry.transform = transform;
}

static void output_handle_done(void* data, struct wl_output* wl_output)
{
	UwacOutput* output = data;
	assert(output);

	output->doneReceived = true;
}

static void output_handle_scale(void* data, struct wl_output* wl_output, int32_t scale)
{
	UwacOutput* output = data;
	assert(output);

	output->scale = scale;
	if (scale > output->display->actual_scale)
		output->display->actual_scale = scale;
}

static void output_handle_name(void* data, struct wl_output* wl_output, const char* name)
{
	UwacOutput* output = data;
	assert(output);

	if (!dupstr(&output->name, name))
	{
		assert(uwacErrorHandler(output->display, UWAC_ERROR_NOMEMORY, "%s: unable to strdup make\n",
		                        __func__));
	}
}

static void output_handle_description(void* data, struct wl_output* wl_output,
                                      const char* description)
{
	UwacOutput* output = data;
	assert(output);

	if (!dupstr(&output->description, description))
	{
		assert(uwacErrorHandler(output->display, UWAC_ERROR_NOMEMORY, "%s: unable to strdup make\n",
		                        __func__));
	}
}

static void output_handle_mode(void* data, struct wl_output* wl_output, uint32_t flags, int width,
                               int height, int refresh)
{
	UwacOutput* output = data;
	assert(output);
	// UwacDisplay *display = output->display;

	if (output->doneNeeded && output->doneReceived)
	{
		/* TODO: we should clear the mode list */
	}

	if (flags & WL_OUTPUT_MODE_CURRENT)
	{
		output->resolution.width = width;
		output->resolution.height = height;
		/*	output->allocation.width = width;
		    output->allocation.height = height;
		    if (display->output_configure_handler)
		        (*display->output_configure_handler)(
		                    output, display->user_data);*/
	}
}

static const struct wl_output_listener output_listener = {
	output_handle_geometry, output_handle_mode, output_handle_done,
	output_handle_scale,    output_handle_name, output_handle_description
};

UwacOutput* UwacCreateOutput(UwacDisplay* d, uint32_t id, uint32_t version)
{
	UwacOutput* o = xzalloc(sizeof *o);
	if (!o)
		return NULL;

	o->display = d;
	o->server_output_id = id;
	o->doneNeeded = (version > 1);
	o->doneReceived = false;
	o->output = wl_registry_bind(d->registry, id, &wl_output_interface,
	                             min(TARGET_OUTPUT_INTERFACE, version));
	wl_output_add_listener(o->output, &output_listener, o);

	wl_list_insert(d->outputs.prev, &o->link);
	return o;
}

int UwacDestroyOutput(UwacOutput* output)
{
	if (!output)
		return UWAC_SUCCESS;

	free(output->make);
	free(output->model);
	free(output->name);
	free(output->description);

	wl_output_destroy(output->output);
	wl_list_remove(&output->link);
	free(output);

	return UWAC_SUCCESS;
}