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/* ScummVM - Graphic Adventure Engine
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 * 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
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

 * GP2X: Main backend.

// Disable symbol overrides so that we can use system headers.

#include "backends/platform/sdl/sdl-sys.h"
#include "backends/platform/gp2x/gp2x-common.h"
#include "backends/platform/gp2x/gp2x-hw.h"
#include "backends/platform/gp2x/gp2x-mem.h"

#include "backends/saves/default/default-saves.h"

#include "common/config-manager.h"
#include "common/debug.h"

// Disable for normal serial logging.

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include <sys/stat.h>

00051 void OSystem_GP2X::initBackend() {
      // Setup default save path to be workingdir/saves
      char savePath[PATH_MAX + 1];
      char workDirName[PATH_MAX + 1];

      if (getcwd(workDirName, PATH_MAX) == NULL) {
            error("Could not obtain current working directory");
      } else {
            printf("Current working directory: %s\n", workDirName);

      strcpy(savePath, workDirName);
      strcat(savePath, "/saves");
      printf("Current save directory: %s\n", savePath);
      struct stat sb;
      if (stat(savePath, &sb) == -1)
            if (errno == ENOENT) // Create the dir if it does not exist
                  if (mkdir(savePath, 0755) != 0)
                        warning("mkdir for '%s' failed", savePath);

      ConfMan.registerDefault("savepath", savePath);

      #ifdef DUMP_STDOUT
            // The GP2X has a serial console but most users do not use this so we
            // output all our STDOUT and STDERR to files for debug purposes.
            char STDOUT_FILE[PATH_MAX + 1];
            char STDERR_FILE[PATH_MAX + 1];

            strcpy(STDOUT_FILE, workDirName);
            strcpy(STDERR_FILE, workDirName);
            strcat(STDOUT_FILE, "/scummvm.stdout.txt");
            strcat(STDERR_FILE, "/scummvm.stderr.txt");

            /* Flush the output in case anything is queued */

            /* Redirect standard input and standard output */
            FILE *newfp = freopen(STDOUT_FILE, "w", stdout);
            if (newfp == NULL) {
            #if !defined(stdout)
                  stdout = fopen(STDOUT_FILE, "w");
                  newfp = fopen(STDOUT_FILE, "w");
                  if (newfp) {
                        *stdout = *newfp;

            newfp = freopen(STDERR_FILE, "w", stderr);
            if (newfp == NULL) {
            #if !defined(stderr)
                  stderr = fopen(STDERR_FILE, "w");
                  newfp = fopen(STDERR_FILE, "w");
                  if (newfp) {
                        *stderr = *newfp;

            setbuf(stderr, NULL);
            printf("%s\n", "Debug: STDOUT and STDERR redirected to text files.");
      #endif /* DUMP_STDOUT */

      // Setup other defaults.
      ConfMan.registerDefault("aspect_ratio", true);

      /* Up default volume values as we use a seperate system level volume anyway. */
      ConfMan.registerDefault("music_volume", 192);
      ConfMan.registerDefault("sfx_volume", 192);
      ConfMan.registerDefault("speech_volume", 192);
      ConfMan.registerDefault("autosave_period", 3 * 60);   // Trigger autosave every 3 minutes - On low batts 4 mins is about your warning time.

      ConfMan.setBool("FM_low_quality", true);

      /* Initialise any GP2X specific stuff we may want (Batt Status, scaler etc.) */

      /* Set Default hardware mixer volume to a preset level (VOLUME_INITIAL). This is done to 'reset' volume level if set by other apps. */

      // Create the events manager
      if (_eventSource == 0)
            _eventSource = new GP2XSdlEventSource();

      // Create the graphics manager
      if (_graphicsManager == 0)
            _graphicsManager = new GP2XSdlGraphicsManager(_eventSource);

      /* Pass to POSIX method to do the heavy lifting */

00146 void OSystem_GP2X::initSDL() {
      // Check if SDL has not been initialized
      if (!_initedSDL) {
            uint32 sdlFlags = SDL_INIT_EVENTTHREAD;
            if (ConfMan.hasKey("disable_sdl_parachute"))
                  sdlFlags |= SDL_INIT_NOPARACHUTE;

            // Initialize SDL (SDL Subsystems are initiliazed in the corresponding sdl managers)
            if (SDL_Init(sdlFlags) == -1)
                  error("Could not initialize SDL: %s", SDL_GetError());

            // Enable unicode support if possible

            _initedSDL = true;

00164 void OSystem_GP2X::addSysArchivesToSearchSet(Common::SearchSet &s, int priority) {
      /* Setup default extra data paths for engine data files and plugins */
      char workDirName[PATH_MAX + 1];

      if (getcwd(workDirName, PATH_MAX) == NULL) {
            error("Error: Could not obtain current working directory");

      Common::FSNode workdirNode(workDirName);
      if (workdirNode.exists() && workdirNode.isDirectory()) {
            s.add("__GP2X_WORKDIR__", new Common::FSDirectory(workDirName), priority);

      char enginedataPath[PATH_MAX+1];

      strcpy(enginedataPath, workDirName);
      strcat(enginedataPath, "/engine-data");

      Common::FSNode engineNode(enginedataPath);
      if (engineNode.exists() && engineNode.isDirectory()) {
            s.add("__GP2X_ENGDATA__", new Common::FSDirectory(enginedataPath), priority);

      char pluginsPath[PATH_MAX+1];

      strcpy(pluginsPath, workDirName);
      strcat(pluginsPath, "/plugins");

      Common::FSNode pluginsNode(pluginsPath);
      if (pluginsNode.exists() && pluginsNode.isDirectory()) {
            s.add("__GP2X_PLUGINS__", new Common::FSDirectory(pluginsPath), priority);

00198 void OSystem_GP2X::quit() {

      #ifdef DUMP_STDOUT
            printf("%s\n", "Debug: STDOUT and STDERR text files closed.");
      #endif /* DUMP_STDOUT */


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