mirror of
https://github.com/mangosfour/server.git
synced 2025-12-14 07:37:01 +00:00
136c0ba618
Import Recast Navigation as third party dependency Credits go to Mikko Mononen memon at inside dot org
228 lines
No EOL
3.7 KiB
HTML
228 lines
No EOL
3.7 KiB
HTML
<HTML
|
|
><HEAD
|
|
><TITLE
|
|
>Audio Examples</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="Examples"
|
|
HREF="guideexamples.html"><LINK
|
|
REL="PREVIOUS"
|
|
TITLE="Event Examples"
|
|
HREF="guideeventexamples.html"><LINK
|
|
REL="NEXT"
|
|
TITLE="CDROM Examples"
|
|
HREF="guidecdromexamples.html"></HEAD
|
|
><BODY
|
|
CLASS="SECT1"
|
|
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="guideeventexamples.html"
|
|
ACCESSKEY="P"
|
|
>Prev</A
|
|
></TD
|
|
><TD
|
|
WIDTH="80%"
|
|
ALIGN="center"
|
|
VALIGN="bottom"
|
|
>Chapter 4. Examples</TD
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="right"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="guidecdromexamples.html"
|
|
ACCESSKEY="N"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"></DIV
|
|
><DIV
|
|
CLASS="SECT1"
|
|
><H1
|
|
CLASS="SECT1"
|
|
><A
|
|
NAME="GUIDEAUDIOEXAMPLES"
|
|
></A
|
|
>Audio Examples</H1
|
|
><P
|
|
></P
|
|
><DIV
|
|
CLASS="SECT2"
|
|
><H2
|
|
CLASS="SECT2"
|
|
><A
|
|
NAME="AEN382"
|
|
></A
|
|
>Opening the audio device</H2
|
|
><P
|
|
><PRE
|
|
CLASS="PROGRAMLISTING"
|
|
> SDL_AudioSpec wanted;
|
|
extern void fill_audio(void *udata, Uint8 *stream, int len);
|
|
|
|
/* Set the audio format */
|
|
wanted.freq = 22050;
|
|
wanted.format = AUDIO_S16;
|
|
wanted.channels = 2; /* 1 = mono, 2 = stereo */
|
|
wanted.samples = 1024; /* Good low-latency value for callback */
|
|
wanted.callback = fill_audio;
|
|
wanted.userdata = NULL;
|
|
|
|
/* Open the audio device, forcing the desired format */
|
|
if ( SDL_OpenAudio(&wanted, NULL) < 0 ) {
|
|
fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError());
|
|
return(-1);
|
|
}
|
|
return(0);</PRE
|
|
></P
|
|
></DIV
|
|
><DIV
|
|
CLASS="SECT2"
|
|
><H2
|
|
CLASS="SECT2"
|
|
><A
|
|
NAME="AEN386"
|
|
></A
|
|
>Playing audio</H2
|
|
><P
|
|
><PRE
|
|
CLASS="PROGRAMLISTING"
|
|
> static Uint8 *audio_chunk;
|
|
static Uint32 audio_len;
|
|
static Uint8 *audio_pos;
|
|
|
|
/* The audio function callback takes the following parameters:
|
|
stream: A pointer to the audio buffer to be filled
|
|
len: The length (in bytes) of the audio buffer
|
|
*/
|
|
void fill_audio(void *udata, Uint8 *stream, int len)
|
|
{
|
|
/* Only play if we have data left */
|
|
if ( audio_len == 0 )
|
|
return;
|
|
|
|
/* Mix as much data as possible */
|
|
len = ( len > audio_len ? audio_len : len );
|
|
SDL_MixAudio(stream, audio_pos, len, SDL_MIX_MAXVOLUME);
|
|
audio_pos += len;
|
|
audio_len -= len;
|
|
}
|
|
|
|
/* Load the audio data ... */
|
|
|
|
;;;;;
|
|
|
|
audio_pos = audio_chunk;
|
|
|
|
/* Let the callback function play the audio chunk */
|
|
SDL_PauseAudio(0);
|
|
|
|
/* Do some processing */
|
|
|
|
;;;;;
|
|
|
|
/* Wait for sound to complete */
|
|
while ( audio_len > 0 ) {
|
|
SDL_Delay(100); /* Sleep 1/10 second */
|
|
}
|
|
SDL_CloseAudio();</PRE
|
|
></P
|
|
></DIV
|
|
></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="guideeventexamples.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="guidecdromexamples.html"
|
|
ACCESSKEY="N"
|
|
>Next</A
|
|
></TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
>Event Examples</TD
|
|
><TD
|
|
WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="guideexamples.html"
|
|
ACCESSKEY="U"
|
|
>Up</A
|
|
></TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
|
VALIGN="top"
|
|
>CDROM Examples</TD
|
|
></TR
|
|
></TABLE
|
|
></DIV
|
|
></BODY
|
|
></HTML
|
|
> |