man SDL_AudioCVT (Fonctions bibliothèques) - SDL_AudioCVT- Audio Conversion Structure
NAME
SDL_AudioCVT- Audio Conversion Structure
STRUCTURE DEFINITION
CWtypedef 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 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
SEE ALSO
SDL_BuildAudioCVT, SDL_ConvertAudio, SDL_AudioSpec