Function sdl2_sys::SDL_BuildAudioCVT

pub unsafe extern "C" fn SDL_BuildAudioCVT(
    cvt: *mut SDL_AudioCVT,
    src_format: SDL_AudioFormat,
    src_channels: Uint8,
    src_rate: c_int,
    dst_format: SDL_AudioFormat,
    dst_channels: Uint8,
    dst_rate: c_int
) -> c_int

Initialize an SDL_AudioCVT structure for conversion.

Before an SDL_AudioCVT structure can be used to convert audio data it must be initialized with source and destination information.

This function will zero out every field of the SDL_AudioCVT, so it must be called before the application fills in the final buffer information.

Once this function has returned successfully, and reported that a conversion is necessary, the application fills in the rest of the fields in SDL_AudioCVT, now that it knows how large a buffer it needs to allocate, and then can call SDL_ConvertAudio() to complete the conversion.

\param cvt an SDL_AudioCVT structure filled in with audio conversion information \param src_format the source format of the audio data; for more info see SDL_AudioFormat \param src_channels the number of channels in the source \param src_rate the frequency (sample-frames-per-second) of the source \param dst_format the destination format of the audio data; for more info see SDL_AudioFormat \param dst_channels the number of channels in the destination \param dst_rate the frequency (sample-frames-per-second) of the destination \returns 1 if the audio filter is prepared, 0 if no conversion is needed, or a negative error code on failure; call SDL_GetError() for more information.

\since This function is available since SDL 2.0.0.

\sa SDL_ConvertAudio