imgCreateAnimationDecoderIo function image

Pointer<ImgAnimationDecoder> imgCreateAnimationDecoderIo(Pointer<SdlIoStream> src, bool closeio, String? type)

Create a decoder to read a series of images from an IOStream.

These animation types are currently supported:

• ANI
• APNG
• AVIFS
• GIF
• WEBP

If closeio is true, src will be closed before returning if this function fails, or when the animation decoder is closed if this function succeeds.

\param src an SDL_IOStream containing a series of images. \param closeio true to close the SDL_IOStream when done, false to leave it open. \param type a filename extension that represent this data ("WEBP", etc). \returns a new IMG_AnimationDecoder, or NULL on failure; call SDL_GetError() for more information.

\since This function is available since SDL_image 3.4.0.

\sa IMG_CreateAnimationDecoder \sa IMG_CreateAnimationDecoderWithProperties \sa IMG_GetAnimationDecoderFrame \sa IMG_ResetAnimationDecoder \sa IMG_CloseAnimationDecoder

extern SDL_DECLSPEC IMG_AnimationDecoder * SDLCALL IMG_CreateAnimationDecoder_IO(SDL_IOStream *src, bool closeio, const char *type)

Implementation

Pointer<ImgAnimationDecoder> imgCreateAnimationDecoderIo(
  Pointer<SdlIoStream> src,
  bool closeio,
  String? type,
) {
  final imgCreateAnimationDecoderIoLookupFunction = _libImage
      .lookupFunction<
        Pointer<ImgAnimationDecoder> Function(
          Pointer<SdlIoStream> src,
          Uint8 closeio,
          Pointer<Utf8> type,
        ),
        Pointer<ImgAnimationDecoder> Function(
          Pointer<SdlIoStream> src,
          int closeio,
          Pointer<Utf8> type,
        )
      >('IMG_CreateAnimationDecoder_IO');
  final typePointer = type != null ? type.toNativeUtf8() : nullptr;
  final result = imgCreateAnimationDecoderIoLookupFunction(
    src,
    closeio ? 1 : 0,
    typePointer,
  );
  calloc.free(typePointer);
  return result;
}