Differences between revisions 5 and 6

SDL_AudioSpec

A structure that describes the audio output format. It contains a callback that is called when the audio device needs more data.

Contents

Data Fields

int	freq	DSP frequency -- samples per second
SDL_AudioFormat	format	audio data format
Uint8	channels	number of channels: 1 mono, 2 stereo
Uint8	silence	audio buffer silence value (calculated)
Uint16	samples	audio buffer size in samples (power of 2)
Uint32	size	audio buffer size in bytes (calculated)
SDL_AudioCallback	callback	a function that is called when the audio device needs more data; see Remarks for details
void*	userdata	an application-specific parameter saved in the SDL_AudioSpec structure

You can add your code example here

The calculated values in this structure are calculated by SDL_OpenAudio().

Stereo samples are stored in a LRLRLR ordering.

callback is of the form:

void callback(void*  userdata, 
              Uint8* stream, 
              int    len);

stream	a pointer to the audio data buffer
len	the length of that buffer in bytes

Once the callback returns, the buffer will no longer be valid.

-  ⇤ ← Revision 5 as of 2009-12-13 06:24:16 → 
  Size: 1388
  Editor: Sam Lantinga
  Comment: Fixed callback formatting
+   ← Revision 6 as of 2009-12-13 06:32:42 → ⇥
  Size: 1588
  Editor: SheenaSmith
  Comment: content added
-Deletions are marked like this.
+Additions are marked like this.
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-A structure that contains audio data.  This structure ''(function in header)'' is called when the audio device needs more data.
+A structure that describes the audio output format. It contains a callback that is called when the audio device needs more data.
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-||[[SDL_AudioCallback]]||'''callback'''||||
||void*||'''userdata'''||||
+||[[SDL_AudioCallback]]||'''callback'''||a function that is called when the audio device needs more data; see [[#callback|Remarks]] for details||
||void*||'''userdata'''||an application-specific parameter saved in the [[SDL_AudioSpec]] structure||
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-Once the callback returns, the buffer will no longer be valid.
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+Line 29:
-The callback is of the form:
+<<Anchor(callback)>> '''callback''' is of the form:
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+Line 39:
+Once the callback returns, the buffer will no longer be valid.