Manual Pages for UNIX Operating System command usage for man SDL_AudioCVT

SDL API Reference                                 SDL_AudioCVT(3)



NAME
     SDL_AudioCVT - Audio Conversion Structure

STRUCTURE DEFINITION
     typedef struct{
       int needed;
       Uint16 src_format;
       Uint16 dest_format;
       double rate_incr;
       Uint8 *buf;
       int len;
       int len_cvt;
       int len_mult;
       double len_ratio;
       void (*filters[10])(struct SDL_AudioCVT *cvt, Uint16 format);
       int filter_index;
     } SDL_AudioCVT;

STRUCTURE DATA
     needed              Set to one if the conversion is possible

     src_format          Audio format of the source

     dest_format         Audio format of the destination

     rate_incr           Rate conversion increment

     buf                 Audio buffer

     len                 Length of the original audio  buffer  in
                         bytes

     len_cvt             Length  of  converted  audio  buffer  in
                         bytes (calculated)

     len_mult            buf  must  be  len*len_mult   bytes   in
                         size(calculated)

     len_ratio           Final audio size is len*len_ratio

     filters[10](..)     Pointers to functions  needed  for  this
                         conversion

     filter_index        Current conversion function

DESCRIPTION
     The SDL_AudioCVT is used to convert audio data between  dif-
     ferent formats. A SDL_AudioCVT structure is created with the
     SDL_BuildAudioCVT function, while the actual  conversion  is
     done by the SDL_ConvertAudio function.





SDL            Last change: Tue 11 Sep 2001, 22:58              1






SDL API Reference                                 SDL_AudioCVT(3)



     Many of the fields in the SDL_AudioCVT structure  should  be
     considered  private and their function will not be discussed
     here.

     Uint8 *buf

     int len

     int len_mult

     double len_ratio

SEE ALSO
     SDL_BuildAudioCVT, SDL_ConvertAudio, SDL_AudioSpec









































SDL            Last change: Tue 11 Sep 2001, 22:58              2