SDL_AudioCVT(3)

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

Overview

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

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

Releases

11 releases since Debian 3.0 (Woody); the text changed 1 time.