SDL_main.c
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:16k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
- This library 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
- Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- Sam Lantinga
- slouken@libsdl.org
- */
- #ifdef SAVE_RCSID
- static char rcsid =
- "@(#) $Id: SDL_main.c,v 1.4 2002/04/22 21:38:02 wmay Exp $";
- #endif
- /* This file takes care of command line argument parsing, and stdio redirection
- in the MacOS environment.
- */
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <ctype.h>
- #if TARGET_API_MAC_CARBON
- #include <Carbon.h>
- #else
- #include <Dialogs.h>
- #include <Fonts.h>
- #include <Events.h>
- #include <Resources.h>
- #include <Folders.h>
- #endif
- /* Include the SDL main definition header */
- #include "SDL.h"
- #include "SDL_main.h"
- #ifdef main
- #undef main
- #endif
- /* The standard output files */
- #define STDOUT_FILE "stdout.txt"
- #define STDERR_FILE "stderr.txt"
- #if !defined(__MWERKS__) && !TARGET_API_MAC_CARBON
- /* In MPW, the qd global has been removed from the libraries */
- QDGlobals qd;
- #endif
- /* Structure for keeping prefs in 1 variable */
- typedef struct {
- Str255 command_line;
- Str255 video_driver_name;
- Boolean output_to_file;
- } PrefsRecord;
- /* See if the command key is held down at startup */
- static Boolean CommandKeyIsDown(void)
- {
- KeyMap theKeyMap;
- GetKeys(theKeyMap);
- if (((unsigned char *) theKeyMap)[6] & 0x80) {
- return(true);
- }
- return(false);
- }
- /* Parse a command line buffer into arguments */
- static int ParseCommandLine(char *cmdline, char **argv)
- {
- char *bufp;
- int argc;
- argc = 0;
- for ( bufp = cmdline; *bufp; ) {
- /* Skip leading whitespace */
- while ( isspace(*bufp) ) {
- ++bufp;
- }
- /* Skip over argument */
- if ( *bufp == '"' ) {
- ++bufp;
- if ( *bufp ) {
- if ( argv ) {
- argv[argc] = bufp;
- }
- ++argc;
- }
- /* Skip over word */
- while ( *bufp && (*bufp != '"') ) {
- ++bufp;
- }
- } else {
- if ( *bufp ) {
- if ( argv ) {
- argv[argc] = bufp;
- }
- ++argc;
- }
- /* Skip over word */
- while ( *bufp && ! isspace(*bufp) ) {
- ++bufp;
- }
- }
- if ( *bufp ) {
- if ( argv ) {
- *bufp = ' ';
- }
- ++bufp;
- }
- }
- if ( argv ) {
- argv[argc] = NULL;
- }
- return(argc);
- }
- /* Remove the output files if there was no output written */
- static void cleanup_output(void)
- {
- FILE *file;
- int empty;
- /* Flush the output in case anything is queued */
- fclose(stdout);
- fclose(stderr);
- /* See if the files have any output in them */
- file = fopen(STDOUT_FILE, "rb");
- if ( file ) {
- empty = (fgetc(file) == EOF) ? 1 : 0;
- fclose(file);
- if ( empty ) {
- remove(STDOUT_FILE);
- }
- }
- file = fopen(STDERR_FILE, "rb");
- if ( file ) {
- empty = (fgetc(file) == EOF) ? 1 : 0;
- fclose(file);
- if ( empty ) {
- remove(STDERR_FILE);
- }
- }
- }
- static int getCurrentAppName (StrFileName name) {
- ProcessSerialNumber process;
- ProcessInfoRec process_info;
- FSSpec process_fsp;
- process.highLongOfPSN = 0;
- process.lowLongOfPSN = kCurrentProcess;
- process_info.processInfoLength = sizeof (process_info);
- process_info.processName = NULL;
- process_info.processAppSpec = &process_fsp;
- if ( noErr != GetProcessInformation (&process, &process_info) )
- return 0;
- memcpy (name, process_fsp.name, process_fsp.name[0] + 1);
- return 1;
- }
- static int getPrefsFile (FSSpec *prefs_fsp, int create) {
- /* The prefs file name is the application name, possibly truncated, */
- /* plus " Preferences */
- #define SUFFIX " Preferences"
- #define MAX_NAME 19 /* 31 - strlen (SUFFIX) */
- short volume_ref_number;
- long directory_id;
- StrFileName prefs_name;
- StrFileName app_name;
- /* Get Preferences folder - works with Multiple Users */
- if ( noErr != FindFolder ( kOnSystemDisk, kPreferencesFolderType, kDontCreateFolder,
- &volume_ref_number, &directory_id) )
- exit (-1);
- if ( ! getCurrentAppName (app_name) )
- exit (-1);
- /* Truncate if name is too long */
- if (app_name[0] > MAX_NAME )
- app_name[0] = MAX_NAME;
- memcpy (prefs_name + 1, app_name + 1, app_name[0]);
- memcpy (prefs_name + app_name[0] + 1, SUFFIX, strlen (SUFFIX));
- prefs_name[0] = app_name[0] + strlen (SUFFIX);
- /* Make the file spec for prefs file */
- if ( noErr != FSMakeFSSpec (volume_ref_number, directory_id, prefs_name, prefs_fsp) )
- if ( !create )
- return 0;
- else {
- /* Create the prefs file */
- memcpy (prefs_fsp->name, prefs_name, prefs_name[0] + 1);
- prefs_fsp->parID = directory_id;
- prefs_fsp->vRefNum = volume_ref_number;
- FSpCreateResFile (prefs_fsp, '????', 'pref', 0);
- if ( noErr != ResError () )
- return 0;
- }
- return 1;
- }
- static int readPrefsResource (PrefsRecord *prefs) {
- Handle prefs_handle;
- prefs_handle = Get1Resource( 'CLne', 128 );
- if (prefs_handle != NULL) {
- int offset = 0;
- int j = 0;
- HLock(prefs_handle);
- /* Get command line string */
- memcpy (prefs->command_line, *prefs_handle, (*prefs_handle)[0]+1);
- /* Get video driver name */
- offset += (*prefs_handle)[0] + 1;
- memcpy (prefs->video_driver_name, *prefs_handle + offset, (*prefs_handle)[offset] + 1);
- /* Get save-to-file option (1 or 0) */
- offset += (*prefs_handle)[offset] + 1;
- prefs->output_to_file = (*prefs_handle)[offset];
- ReleaseResource( prefs_handle );
- return ResError() == noErr;
- }
- return 0;
- }
- static int writePrefsResource (PrefsRecord *prefs, short resource_file) {
- Handle prefs_handle;
- UseResFile (resource_file);
- prefs_handle = Get1Resource ( 'CLne', 128 );
- if (prefs_handle != NULL)
- RemoveResource (prefs_handle);
- prefs_handle = NewHandle ( prefs->command_line[0] + prefs->video_driver_name[0] + 4 );
- if (prefs_handle != NULL) {
- int offset;
- HLock (prefs_handle);
- /* Command line text */
- offset = 0;
- memcpy (*prefs_handle, prefs->command_line, prefs->command_line[0] + 1);
- /* Video driver name */
- offset += prefs->command_line[0] + 1;
- memcpy (*prefs_handle + offset, prefs->video_driver_name, prefs->video_driver_name[0] + 1);
- /* Output-to-file option */
- offset += prefs->video_driver_name[0] + 1;
- *( *((char**)prefs_handle) + offset) = (char)prefs->output_to_file;
- *( *((char**)prefs_handle) + offset + 1) = 0;
- AddResource (prefs_handle, 'CLne', 128, "pCommand Line");
- WriteResource (prefs_handle);
- UpdateResFile (resource_file);
- DisposeHandle (prefs_handle);
- return ResError() == noErr;
- }
- return 0;
- }
- static int readPreferences (PrefsRecord *prefs) {
- int no_error = 1;
- FSSpec prefs_fsp;
- /* Check for prefs file first */
- if ( getPrefsFile (&prefs_fsp, 0) ) {
- short prefs_resource;
- prefs_resource = FSpOpenResFile (&prefs_fsp, fsRdPerm);
- if ( prefs_resource == -1 ) /* this shouldn't happen, but... */
- return 0;
- UseResFile (prefs_resource);
- no_error = readPrefsResource (prefs);
- CloseResFile (prefs_resource);
- }
- /* Fall back to application's resource fork (reading only, so this is safe) */
- else {
- no_error = readPrefsResource (prefs);
- }
- return no_error;
- }
- static int writePreferences (PrefsRecord *prefs) {
- int no_error = 1;
- FSSpec prefs_fsp;
- /* Get prefs file, create if it doesn't exist */
- if ( getPrefsFile (&prefs_fsp, 1) ) {
- short prefs_resource;
- prefs_resource = FSpOpenResFile (&prefs_fsp, fsRdWrPerm);
- if (prefs_resource == -1)
- return 0;
- no_error = writePrefsResource (prefs, prefs_resource);
- CloseResFile (prefs_resource);
- }
- return no_error;
- }
- /* This is where execution begins */
- int main(int argc, char *argv[])
- {
- #pragma unused(argc, argv)
- #define DEFAULT_ARGS "p" /* pascal string for default args */
- #define DEFAULT_VIDEO_DRIVER "ptoolbox" /* pascal string for default video driver name */
- #define DEFAULT_OUTPUT_TO_FILE 1 /* 1 == output to file, 0 == no output */
- #define VIDEO_ID_DRAWSPROCKET 1 /* these correspond to popup menu choices */
- #define VIDEO_ID_TOOLBOX 2
- PrefsRecord prefs = { DEFAULT_ARGS, DEFAULT_VIDEO_DRIVER, DEFAULT_OUTPUT_TO_FILE };
- int nargs;
- char **args;
- char *commandLine;
- StrFileName appNameText;
- int videodriver = VIDEO_ID_TOOLBOX;
- int settingsChanged = 0;
- long i;
- /* Kyle's SDL command-line dialog code ... */
- #if !TARGET_API_MAC_CARBON
- InitGraf (&qd.thePort);
- InitFonts ();
- InitWindows ();
- InitMenus ();
- InitDialogs (nil);
- #endif
- InitCursor ();
- FlushEvents(everyEvent,0);
- #if !TARGET_API_MAC_CARBON
- MaxApplZone ();
- #endif
- MoreMasters ();
- MoreMasters ();
- #if 0
- /* Intialize SDL, and put up a dialog if we fail */
- if ( SDL_Init (0) < 0 ) {
- #define kErr_OK 1
- #define kErr_Text 2
- DialogPtr errorDialog;
- short dummyType;
- Rect dummyRect;
- Handle dummyHandle;
- short itemHit;
- errorDialog = GetNewDialog (1001, nil, (WindowPtr)-1);
- DrawDialog (errorDialog);
- GetDialogItem (errorDialog, kErr_Text, &dummyType, &dummyHandle, &dummyRect);
- SetDialogItemText (dummyHandle, "pError Initializing SDL");
- SetPort (errorDialog);
- do {
- ModalDialog (nil, &itemHit);
- } while (itemHit != kErr_OK);
- DisposeDialog (errorDialog);
- exit (-1);
- }
- atexit(cleanup_output);
- atexit(SDL_Quit);
- #endif
- /* Set up SDL's QuickDraw environment */
- #if !TARGET_API_MAC_CARBON
- SDL_InitQuickDraw(&qd);
- #endif
- if ( readPreferences (&prefs) ) {
- if (memcmp (prefs.video_driver_name+1, "DSp", 3) == 0)
- videodriver = 1;
- else if (memcmp (prefs.video_driver_name+1, "toolbox", 7) == 0)
- videodriver = 2;
- }
- if ( CommandKeyIsDown() ) {
- #define kCL_OK 1
- #define kCL_Cancel 2
- #define kCL_Text 3
- #define kCL_File 4
- #define kCL_Video 6
- DialogPtr commandDialog;
- short dummyType;
- Rect dummyRect;
- Handle dummyHandle;
- short itemHit;
- /* Assume that they will change settings, rather than do exhaustive check */
- settingsChanged = 1;
- /* Create dialog and display it */
- commandDialog = GetNewDialog (1000, nil, (DialogPtr)-1);
- SetPort (commandDialog);
- /* Setup controls */
- GetDialogItem (commandDialog, kCL_File, &dummyType, &dummyHandle, &dummyRect); /* MJS */
- SetControlValue ((ControlHandle)dummyHandle, prefs.output_to_file );
- GetDialogItem (commandDialog, kCL_Text, &dummyType, &dummyHandle, &dummyRect);
- SetDialogItemText (dummyHandle, prefs.command_line);
- GetDialogItem (commandDialog, kCL_Video, &dummyType, &dummyHandle, &dummyRect);
- SetControlValue ((ControlRef)dummyHandle, videodriver);
- SetDialogDefaultItem (commandDialog, kCL_OK);
- SetDialogCancelItem (commandDialog, kCL_Cancel);
- do {
- ModalDialog(nil, &itemHit); /* wait for user response */
- /* Toggle command-line output checkbox */
- if ( itemHit == kCL_File ) {
- GetDialogItem(commandDialog, kCL_File, &dummyType, &dummyHandle, &dummyRect); /* MJS */
- SetControlValue((ControlHandle)dummyHandle, !GetControlValue((ControlHandle)dummyHandle) );
- }
- } while (itemHit != kCL_OK && itemHit != kCL_Cancel);
- /* Get control values, even if they did not change */
- GetDialogItem (commandDialog, kCL_Text, &dummyType, &dummyHandle, &dummyRect); /* MJS */
- GetDialogItemText (dummyHandle, prefs.command_line);
- GetDialogItem (commandDialog, kCL_File, &dummyType, &dummyHandle, &dummyRect); /* MJS */
- prefs.output_to_file = GetControlValue ((ControlHandle)dummyHandle);
- GetDialogItem (commandDialog, kCL_Video, &dummyType, &dummyHandle, &dummyRect);
- videodriver = GetControlValue ((ControlRef)dummyHandle);
- DisposeDialog (commandDialog);
- if (itemHit == kCL_Cancel ) {
- exit (0);
- }
- }
- /* Set pseudo-environment variables for video driver, update prefs */
- switch ( videodriver ) {
- case VIDEO_ID_DRAWSPROCKET:
- putenv ("SDL_VIDEODRIVER=DSp");
- memcpy (prefs.video_driver_name, "pDSp", 4);
- break;
- case VIDEO_ID_TOOLBOX:
- putenv ("SDL_VIDEODRIVER=toolbox");
- memcpy (prefs.video_driver_name, "ptoolbox", 8);
- break;
- }
- /* Redirect standard I/O to files */
- if ( prefs.output_to_file ) {
- freopen (STDOUT_FILE, "w", stdout);
- freopen (STDERR_FILE, "w", stderr);
- } else {
- fclose (stdout);
- fclose (stderr);
- }
- if (settingsChanged) {
- /* Save the prefs, even if they might not have changed (but probably did) */
- if ( ! writePreferences (&prefs) )
- fprintf (stderr, "WARNING: Could not save preferences!n");
- }
- getCurrentAppName (appNameText); /* check for error here ? */
- commandLine = (char*) malloc (appNameText[0] + prefs.command_line[0] + 2);
- if ( commandLine == NULL ) {
- exit(-1);
- }
- /* Rather than rewrite ParseCommandLine method, let's replace */
- /* any spaces in application name with underscores, */
- /* so that the app name is only 1 argument */
- for (i = 1; i < 1+appNameText[0]; i++)
- if ( appNameText[i] == ' ' ) appNameText[i] = '_';
- /* Copy app name & full command text to command-line C-string */
- memcpy (commandLine, appNameText + 1, appNameText[0]);
- commandLine[appNameText[0]] = ' ';
- memcpy (commandLine + appNameText[0] + 1, prefs.command_line + 1, prefs.command_line[0]);
- commandLine[ appNameText[0] + 1 + prefs.command_line[0] ] = ' ';
- /* Parse C-string into argv and argc */
- nargs = ParseCommandLine (commandLine, NULL);
- args = (char **)malloc((nargs+1)*(sizeof *args));
- if ( args == NULL ) {
- exit(-1);
- }
- ParseCommandLine (commandLine, args);
- /* Run the main application code */
- SDL_main(nargs, args);
- free (args);
- free (commandLine);
- /* Remove useless stdout.txt and stderr.txt */
- cleanup_output ();
- /* Exit cleanly, calling atexit() functions */
- exit (0);
- /* Never reached, but keeps the compiler quiet */
- return (0);
- }