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Date: Tue, 17 Feb 2009 14:00:25 +0100
From: Stefan Klug
Subject: [SDL] Possible bug, paused audio playing garbage
On my WinCE device a paused audio device plays random garbage.
This might also be the issue in the thread "sound cracks with SDL_mixer
and AUDIO_S16LSB"
I don't have that much knowledge of the SDL audio part, but the attached
patch fixes it for me, and collapses two redundant ifs.
I'm not sure if this is the correct way to fix this.
Shouldn't the complete stream conversion part of the RunAudio loop be
dependent on the paused property of the device? (not only the call to
(*fill)(udata, istream, istream_len).
Anyways. Would be great if the patch or a fix could find its way to SVN ;-)
Cheers
Stefan
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Mon, 23 Mar 2009 05:21:40 +0000 |
parents | 355632dca928 |
children |
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<HTML ><HEAD ><TITLE >SDL_Init</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="SDL Library Documentation" HREF="index.html"><LINK REL="UP" TITLE="General" HREF="general.html"><LINK REL="PREVIOUS" TITLE="General" HREF="general.html"><LINK REL="NEXT" TITLE="SDL_InitSubSystem" HREF="sdlinitsubsystem.html"></HEAD ><BODY CLASS="REFENTRY" BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >SDL Library Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="general.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdlinitsubsystem.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SDLINIT" ></A >SDL_Init</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN440" ></A ><H2 >Name</H2 >SDL_Init -- Initializes SDL</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN443" ></A ><H2 >Synopsis</H2 ><DIV CLASS="FUNCSYNOPSIS" ><A NAME="AEN444" ></A ><P ></P ><PRE CLASS="FUNCSYNOPSISINFO" >#include "SDL.h"</PRE ><P ><CODE ><CODE CLASS="FUNCDEF" >int <B CLASS="FSFUNC" >SDL_Init</B ></CODE >(Uint32 flags);</CODE ></P ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN450" ></A ><H2 >Description</H2 ><P >Initializes SDL. This should be called before all other SDL functions. The <TT CLASS="PARAMETER" ><I >flags</I ></TT > parameter specifies what part(s) of SDL to initialize.</P ><DIV CLASS="INFORMALTABLE" ><A NAME="AEN454" ></A ><P ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><TBODY ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_INIT_TIMER</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Initializes the <A HREF="time.html" >timer</A > subsystem.</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_INIT_AUDIO</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Initializes the <A HREF="audio.html" >audio</A > subsystem.</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_INIT_VIDEO</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Initializes the <A HREF="video.html" >video</A > subsystem.</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_INIT_CDROM</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Initializes the <A HREF="cdrom.html" >cdrom</A > subsystem.</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_INIT_JOYSTICK</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Initializes the <A HREF="joystick.html" >joystick</A > subsystem.</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_INIT_EVERYTHING</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Initialize all of the above.</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_INIT_NOPARACHUTE</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Prevents SDL from catching fatal signals.</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><TT CLASS="LITERAL" >SDL_INIT_EVENTTHREAD</TT ></TD ><TD ALIGN="LEFT" VALIGN="TOP" > </TD ></TR ></TBODY ></TABLE ><P ></P ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN494" ></A ><H2 >Return Value</H2 ><P >Returns <SPAN CLASS="RETURNVALUE" >-1</SPAN > on an error or <SPAN CLASS="RETURNVALUE" >0</SPAN > on success.</P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN499" ></A ><H2 >See Also</H2 ><P ><A HREF="sdlquit.html" ><TT CLASS="FUNCTION" >SDL_Quit</TT ></A >, <A HREF="sdlinitsubsystem.html" ><TT CLASS="FUNCTION" >SDL_InitSubSystem</TT ></A ></P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="general.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sdlinitsubsystem.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >General</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="general.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_InitSubSystem</TD ></TR ></TABLE ></DIV ></BODY ></HTML >