Differences between revisions 4 and 5

SDL_AudioSpec

A structure that contains audio data. This structure (function in header) 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
void*	userdata

You can add your code example here

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

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

Stereo samples are stored in a LRLRLR ordering.

The 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

-  ⇤ ← Revision 4 as of 2009-12-13 06:21:07 → 
  Size: 1440
  Editor: SheenaSmith
  Comment: content changed
+   ← Revision 5 as of 2009-12-13 06:24:16 → ⇥
  Size: 1388
  Editor: Sam Lantinga
  Comment: Fixed callback formatting
-Deletions are marked like this.
+Additions are marked like this.
 Line 9:
-== Structure Parameters ==
||'''stream'''||a pointer to the audio data buffer||
||'''len'''||the length of that buffer in bytes||
-Line 20:
+Line 16:
+||[[SDL_AudioCallback]]||'''callback'''||||
-Line 21:
+Line 18:
-||[[SDL_AudioCallback]]||'''callback'''||||
-Line 37:
+Line 33:
-void (SDLCALL* callback)
     (void*    userdata, 
      Uint8*   stream, 
      int      len);
void* userdata
+void callback(void*  userdata, 
              Uint8* stream, 
              int    len);
-Line 43:
+Line 37:
+||'''stream'''||a pointer to the audio data buffer||
||'''len'''||the length of that buffer in bytes||