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c8264f636a
Date: Fri, 13 Jan 2006 18:09:45 -0500 From: mhall4400 vipmail kvcc edu Subject: Possible SDL bug Greetings I believe Ive come across a bug in your SDL product (1.2.9), in the CD-ROM control portion of the library. When calling the SDL_CDPlay() function to play the last track of a CD using the offset and length from an SDL_CD structure generated by SDL_CDOpen(), I get the following error from a call to SDL_Error(): mciSendCommand() error: The specified parameter is out of range for the specified command. The code returning the error is: SDL_CDPlay(g_playingDriveSDLCD, g_playingDriveSDLCD->track[trackNumberInt].offset, g_playingDriveSDLCD->track[trackNumberInt].length) Subtracting one from the length of the provided length seems to repair the problem: SDL_CDPlay(g_playingDriveSDLCD, g_playingDriveSDLCD->track[trackNumberInt].offset, (g_playingDriveSDLCD->track[trackNumberInt].length) - 1) Ive replicated this problem on Windows 98 SE (several months since last patch), fully-patched Window ME, seldom-patched Windows XP SP1, and fully-patched Windows XP SP2. While investigating the issue, I came across a line in your librarys win32 source code in file \src\cdrom\win32\SDL_syscdrom.c (source code zip archive from your download page), function: SDL_SYS_CDGetTOC(), line 226 where you add 1 to the value for length to fix MCI last track length bug. This may be the source of the issue (because subtracting 1 from the length seems to resolve the issue). Microsoft may have patched the referenced bug since you wrote that line. Mike Hall --HG-- extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401528 |
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| autogen.sh | ||
| Borland.html | ||
| Borland.zip | ||
| BUGS | ||
| configure.in | ||
| COPYING | ||
| CREDITS | ||
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| EpocBuildFiles.zip | ||
| INSTALL | ||
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| MPWmake.sea.bin | ||
| PBProjects.tar.gz | ||
| README | ||
| README-SDL.txt | ||
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| WhatsNew | ||
Simple DirectMedia Layer
(SDL)
Version 1.2
---
http://www.libsdl.org/
This is the Simple DirectMedia Layer, a general API that provides low
level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL,
and 2D framebuffer across multiple platforms.
SDL is written in C, but works with C++ natively, and has bindings to
several other languages, including Ada, C#, Eiffel, Java, Lua, ML,
Objective C, Pascal, Perl, PHP, Pike, Python, and Ruby.
The current version supports Linux, Windows, BeOS, MacOS, MacOS X,
FreeBSD, OpenBSD, BSD/OS, Solaris, IRIX, and QNX. The code contains
support for Windows CE, AmigaOS, Dreamcast, Atari, NetBSD, AIX, OSF/Tru64,
RISC OS, SymbianOS, and OS/2, but these are not officially supported.
This library is distributed under GNU LGPL version 2, which can be
found in the file "COPYING". This license allows you to use SDL
freely in commercial programs as long as you link with the dynamic
library.
The best way to learn how to use SDL is to check out the header files in
the "include" subdirectory and the programs in the "test" subdirectory.
The header files and test programs are well commented and always up to date.
More documentation is available in HTML format in "./docs/index.html"
The test programs in the "test" subdirectory are in the public domain.
Frequently asked questions are answered online:
http://www.libsdl.org/faq.php
If you need help with the library, or just want to discuss SDL related
issues, you can join the developers mailing list:
http://www.libsdl.org/mailing-list.php
Enjoy!
Sam Lantinga (slouken@libsdl.org)