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/* ply-renderer.c - renderer abstraction
*
* Copyright (C) 2006, 2007, 2008, 2009 Red Hat, Inc.
* 2008 Charlie Brej <cbrej@cs.man.ac.uk>
*
* 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, 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.
*
* Written by: Charlie Brej <cbrej@cs.man.ac.uk>
* Kristian Høgsberg <krh@redhat.com>
* Ray Strode <rstrode@redhat.com>
*/
#include "config.h"
#include "ply-renderer.h"
#include <assert.h>
#include <errno.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
#include "ply-renderer-plugin.h"
#include "ply-buffer.h"
#include "ply-terminal.h"
#include "ply-event-loop.h"
#include "ply-list.h"
#include "ply-logger.h"
#include "ply-utils.h"
struct _ply_renderer
{
ply_event_loop_t *loop;
ply_module_handle_t *module_handle;
const ply_renderer_plugin_interface_t *plugin_interface;
ply_renderer_backend_t *backend;
ply_renderer_type_t type;
char *device_name;
ply_terminal_t *terminal;
uint32_t input_source_is_open : 1;
uint32_t is_mapped : 1;
uint32_t is_active : 1;
};
typedef const ply_renderer_plugin_interface_t *
(*get_backend_interface_function_t) (void);
static void ply_renderer_unload_plugin (ply_renderer_t *renderer);
ply_renderer_t *
ply_renderer_new (ply_renderer_type_t renderer_type,
const char *device_name,
ply_terminal_t *terminal)
{
ply_renderer_t *renderer;
renderer = calloc (1, sizeof(struct _ply_renderer));
renderer->type = renderer_type;
if (device_name != NULL)
renderer->device_name = strdup (device_name);
renderer->terminal = terminal;
return renderer;
}
void
ply_renderer_free (ply_renderer_t *renderer)
{
if (renderer == NULL)
return;
if (renderer->plugin_interface != NULL) {
ply_trace ("Unloading renderer backend plugin");
ply_renderer_unload_plugin (renderer);
}
free (renderer->device_name);
free (renderer);
}
const char *
ply_renderer_get_device_name (ply_renderer_t *renderer)
{
return renderer->device_name;
}
static bool
ply_renderer_load_plugin (ply_renderer_t *renderer,
const char *module_path)
{
assert (renderer != NULL);
get_backend_interface_function_t get_renderer_backend_interface;
renderer->module_handle = ply_open_module (module_path);
if (renderer->module_handle == NULL)
return false;
get_renderer_backend_interface = (get_backend_interface_function_t)
ply_module_look_up_function (renderer->module_handle,
"ply_renderer_backend_get_interface");
if (get_renderer_backend_interface == NULL) {
ply_save_errno ();
ply_trace ("module '%s' is not a renderer plugin",
module_path);
ply_close_module (renderer->module_handle);
renderer->module_handle = NULL;
ply_restore_errno ();
return false;
}
renderer->plugin_interface = get_renderer_backend_interface ();
if (renderer->plugin_interface == NULL) {
ply_trace ("module '%s' is not a valid renderer plugin",
module_path);
ply_save_errno ();
ply_close_module (renderer->module_handle);
renderer->module_handle = NULL;
ply_restore_errno ();
return false;
}
renderer->backend = renderer->plugin_interface->create_backend (renderer->device_name,
renderer->terminal);
if (renderer->backend == NULL) {
ply_save_errno ();
ply_trace ("module '%s' renderer backend could not be created",
module_path);
ply_close_module (renderer->module_handle);
renderer->module_handle = NULL;
ply_restore_errno ();
return false;
}
if (renderer->plugin_interface->get_device_name != NULL) {
free (renderer->device_name);
renderer->device_name = strdup (renderer->plugin_interface->get_device_name (renderer->backend));
}
return true;
}
static void
ply_renderer_unload_plugin (ply_renderer_t *renderer)
{
assert (renderer != NULL);
assert (renderer->plugin_interface != NULL);
assert (renderer->module_handle != NULL);
ply_close_module (renderer->module_handle);
renderer->plugin_interface = NULL;
renderer->module_handle = NULL;
}
static bool
ply_renderer_open_device (ply_renderer_t *renderer)
{
assert (renderer != NULL);
assert (renderer->plugin_interface != NULL);
return renderer->plugin_interface->open_device (renderer->backend);
}
static void
ply_renderer_close_device (ply_renderer_t *renderer)
{
assert (renderer != NULL);
assert (renderer->plugin_interface != NULL);
renderer->plugin_interface->close_device (renderer->backend);
}
static bool
ply_renderer_query_device (ply_renderer_t *renderer)
{
assert (renderer != NULL);
assert (renderer->plugin_interface != NULL);
return renderer->plugin_interface->query_device (renderer->backend);
}
static bool
ply_renderer_map_to_device (ply_renderer_t *renderer)
{
assert (renderer != NULL);
assert (renderer->plugin_interface != NULL);
if (renderer->is_mapped)
return true;
renderer->is_mapped = renderer->plugin_interface->map_to_device (renderer->backend);
return renderer->is_mapped;
}
static void
ply_renderer_unmap_from_device (ply_renderer_t *renderer)
{
assert (renderer != NULL);
assert (renderer->plugin_interface != NULL);
if (!renderer->is_mapped)
return;
renderer->plugin_interface->unmap_from_device (renderer->backend);
renderer->is_mapped = false;
}
static bool
ply_renderer_open_plugin (ply_renderer_t *renderer,
const char *plugin_path)
{
ply_trace ("trying to open renderer plugin %s", plugin_path);
if (!ply_renderer_load_plugin (renderer, plugin_path))
return false;
if (!ply_renderer_open_device (renderer)) {
ply_trace ("could not open rendering device for plugin %s",
plugin_path);
ply_renderer_unload_plugin (renderer);
return false;
}
if (!ply_renderer_query_device (renderer)) {
ply_trace ("could not query rendering device for plugin %s",
plugin_path);
ply_renderer_close_device (renderer);
ply_renderer_unload_plugin (renderer);
return false;
}
ply_trace ("opened renderer plugin %s", plugin_path);
return true;
}
bool
ply_renderer_open (ply_renderer_t *renderer)
{
int i;
struct
{
ply_renderer_type_t type;
const char *path;
} known_plugins[] =
{
{ PLY_RENDERER_TYPE_X11, PLYMOUTH_PLUGIN_PATH "renderers/x11.so" },
{ PLY_RENDERER_TYPE_DRM, PLYMOUTH_PLUGIN_PATH "renderers/drm.so" },
{ PLY_RENDERER_TYPE_FRAME_BUFFER, PLYMOUTH_PLUGIN_PATH "renderers/frame-buffer.so" },
{ PLY_RENDERER_TYPE_NONE, NULL }
};
renderer->is_active = false;
for (i = 0; known_plugins[i].type != PLY_RENDERER_TYPE_NONE; i++) {
if (renderer->type == known_plugins[i].type ||
renderer->type == PLY_RENDERER_TYPE_AUTO)
if (ply_renderer_open_plugin (renderer, known_plugins[i].path)) {
renderer->is_active = true;
goto out;
}
}
ply_trace ("could not find suitable rendering plugin");
out:
return renderer->is_active;
}
void
ply_renderer_close (ply_renderer_t *renderer)
{
ply_renderer_unmap_from_device (renderer);
ply_renderer_close_device (renderer);
renderer->is_active = false;
}
void
ply_renderer_activate (ply_renderer_t *renderer)
{
assert (renderer->plugin_interface != NULL);
if (renderer->is_active)
return;
renderer->plugin_interface->activate (renderer->backend);
renderer->is_active = true;
}
void
ply_renderer_deactivate (ply_renderer_t *renderer)
{
assert (renderer->plugin_interface != NULL);
renderer->plugin_interface->deactivate (renderer->backend);
renderer->is_active = false;
}
bool
ply_renderer_is_active (ply_renderer_t *renderer)
{
return renderer->is_active;
}
ply_list_t *
ply_renderer_get_heads (ply_renderer_t *renderer)
{
assert (renderer->plugin_interface != NULL);
return renderer->plugin_interface->get_heads (renderer->backend);
}
ply_pixel_buffer_t *
ply_renderer_get_buffer_for_head (ply_renderer_t *renderer,
ply_renderer_head_t *head)
{
assert (renderer != NULL);
assert (renderer->plugin_interface != NULL);
assert (head != NULL);
return renderer->plugin_interface->get_buffer_for_head (renderer->backend,
head);
}
void
ply_renderer_flush_head (ply_renderer_t *renderer,
ply_renderer_head_t *head)
{
assert (renderer != NULL);
assert (renderer->plugin_interface != NULL);
assert (head != NULL);
if (!ply_renderer_map_to_device (renderer))
return;
renderer->plugin_interface->flush_head (renderer->backend, head);
}
ply_renderer_input_source_t *
ply_renderer_get_input_source (ply_renderer_t *renderer)
{
assert (renderer != NULL);
assert (renderer->plugin_interface != NULL);
return renderer->plugin_interface->get_input_source (renderer->backend);
}
bool
ply_renderer_open_input_source (ply_renderer_t *renderer,
ply_renderer_input_source_t *input_source)
{
assert (renderer != NULL);
assert (input_source != NULL);
renderer->input_source_is_open = renderer->plugin_interface->open_input_source (renderer->backend,
input_source);
return renderer->input_source_is_open;
}
void
ply_renderer_set_handler_for_input_source (ply_renderer_t *renderer,
ply_renderer_input_source_t *input_source,
ply_renderer_input_source_handler_t handler,
void *user_data)
{
assert (renderer != NULL);
assert (input_source != NULL);
renderer->plugin_interface->set_handler_for_input_source (renderer->backend,
input_source,
handler,
user_data);
}
void
ply_renderer_close_input_source (ply_renderer_t *renderer,
ply_renderer_input_source_t *input_source)
{
assert (renderer != NULL);
assert (input_source != NULL);
if (!renderer->input_source_is_open)
return;
renderer->plugin_interface->close_input_source (renderer->backend,
input_source);
renderer->input_source_is_open = false;
}
/* vim: set ts=4 sw=4 expandtab autoindent cindent cino={.5s,(0: */
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