Mercurial > sdl-ios-xcode
diff docs/html/audio.html @ 0:74212992fb08
Initial revision
| author | Sam Lantinga <slouken@lokigames.com> |
|---|---|
| date | Thu, 26 Apr 2001 16:45:43 +0000 |
| parents | |
| children | 55f1f1b3e27d |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/docs/html/audio.html Thu Apr 26 16:45:43 2001 +0000 @@ -0,0 +1,234 @@ +<HTML +><HEAD +><TITLE +>Audio</TITLE +><META +NAME="GENERATOR" +CONTENT="Modular DocBook HTML Stylesheet Version 1.61 +"><LINK +REL="HOME" +TITLE="SDL Library Documentation" +HREF="index.html"><LINK +REL="UP" +TITLE="SDL Reference" +HREF="reference.html"><LINK +REL="PREVIOUS" +TITLE="SDL_JoystickClose" +HREF="sdljoystickclose.html"><LINK +REL="NEXT" +TITLE="SDL_AudioSpec" +HREF="sdlaudiospec.html"><META +NAME="KEYWORD" +CONTENT="audio"><META +NAME="KEYWORD" +CONTENT="function"></HEAD +><BODY +CLASS="CHAPTER" +BGCOLOR="#FFF8DC" +TEXT="#000000" +LINK="#0000ee" +VLINK="#551a8b" +ALINK="#ff0000" +><DIV +CLASS="NAVHEADER" +><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="sdljoystickclose.html" +>Prev</A +></TD +><TD +WIDTH="80%" +ALIGN="center" +VALIGN="bottom" +></TD +><TD +WIDTH="10%" +ALIGN="right" +VALIGN="bottom" +><A +HREF="sdlaudiospec.html" +>Next</A +></TD +></TR +></TABLE +><HR +ALIGN="LEFT" +WIDTH="100%"></DIV +><DIV +CLASS="CHAPTER" +><H1 +><A +NAME="AUDIO" +>Chapter 10. Audio</A +></H1 +><DIV +CLASS="TOC" +><DL +><DT +><B +>Table of Contents</B +></DT +><DT +><A +HREF="sdlaudiospec.html" +>SDL_AudioSpec</A +> — Audio Specification Structure</DT +><DT +><A +HREF="sdlopenaudio.html" +>SDL_OpenAudio</A +> — Opens the audio device with the desired parameters.</DT +><DT +><A +HREF="sdlpauseaudio.html" +>SDL_PauseAudio</A +> — Pauses and unpauses the audio callback processing</DT +><DT +><A +HREF="sdlgetaudiostatus.html" +>SDL_GetAudioStatus</A +> — Get the current audio state</DT +><DT +><A +HREF="sdlloadwav.html" +>SDL_LoadWAV</A +> — Load a WAVE file</DT +><DT +><A +HREF="sdlfreewav.html" +>SDL_FreeWAV</A +> — Frees previously opened WAV data</DT +><DT +><A +HREF="sdlaudiocvt.html" +>SDL_AudioCVT</A +> — Audio Conversion Structure</DT +><DT +><A +HREF="sdlbuildaudiocvt.html" +>SDL_BuildAudioCVT</A +> — Initializes a SDL_AudioCVT structure for conversion</DT +><DT +><A +HREF="sdlconvertaudio.html" +>SDL_ConvertAudio</A +> — Convert audio data to a desired audio format.</DT +><DT +><A +HREF="sdlmixaudio.html" +>SDL_MixAudio</A +> — Mix audio data</DT +><DT +><A +HREF="sdllockaudio.html" +>SDL_LockAudio</A +> — Lock out the callback function</DT +><DT +><A +HREF="sdlunlockaudio.html" +>SDL_UnlockAudio</A +> — Unlock the callback function</DT +><DT +><A +HREF="sdlcloseaudio.html" +>SDL_CloseAudio</A +> — Shuts down audio processing and closes the audio device.</DT +></DL +></DIV +><P +>Sound on the computer is translated from waves that you hear into a series of +values, or samples, each representing the amplitude of the wave. When these +samples are sent in a stream to a sound card, an approximation of the original +wave can be recreated. The more bits used to represent the amplitude, and the +greater frequency these samples are gathered, the closer the approximated +sound is to the original, and the better the quality of sound.</P +><P +>This library supports both 8 and 16 bit signed and unsigned sound samples, +at frequencies ranging from 11025 Hz to 44100 Hz, depending on the +underlying hardware. If the hardware doesn't support the desired audio +format or frequency, it can be emulated if desired (See +<A +HREF="sdlopenaudio.html" +><TT +CLASS="FUNCTION" +>SDL_OpenAudio()</TT +></A +>)</P +><P +>A commonly supported audio format is 16 bits per sample at 22050 Hz.</P +></DIV +><DIV +CLASS="NAVFOOTER" +><HR +ALIGN="LEFT" +WIDTH="100%"><TABLE +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +><A +HREF="sdljoystickclose.html" +>Prev</A +></TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +><A +HREF="index.html" +>Home</A +></TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +><A +HREF="sdlaudiospec.html" +>Next</A +></TD +></TR +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +>SDL_JoystickClose</TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +><A +HREF="reference.html" +>Up</A +></TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +>SDL_AudioSpec</TD +></TR +></TABLE +></DIV +></BODY +></HTML +> \ No newline at end of file