/// <summary>
/// Should always be called, to initialize the structure. Returns false in case
/// of version mismatch. WebPPictureInit() must have succeeded before using the
/// 'picture' object.
/// Note that, by default, use_argb is false and colorspace is WEBP_YUV420.
/// </summary>
/// <param name="picture"></param>
/// <returns></returns>
public static int WebPPictureInit(ref WebPPicture picture)
{
return(Decode.WebPPictureInitInternal(ref picture, WEBP_ENCODER_ABI_VERSION));
}
// // Deprecated alpha-less version of WebPIDecGetYUVA(): it will ignore the
//// alpha information (if present). Kept for backward compatibility.
//public IntPtr WebPIDecGetYUV(IntPtr decoder, int* last_y, uint8_t** u, uint8_t** v,
// int* width, int* height, int* stride, int* uv_stride) {
// return WebPIDecGetYUVA(idec, last_y, u, v, NULL, width, height,
// stride, uv_stride, NULL);
/// <summary>
/// Should always be called, to initialize a fresh WebPConfig structure before
/// modification. Returns false in case of version mismatch. WebPConfigInit()
/// must have succeeded before using the 'config' object.
/// Note that the default values are lossless=0 and quality=75.
/// </summary>
/// <param name="config"></param>
/// <returns></returns>
public static int WebPConfigInit(ref WebPConfig config)
{
return(Decode.WebPConfigInitInternal(ref config, WebPPreset.WEBP_PRESET_DEFAULT, 75.0f, WEBP_ENCODER_ABI_VERSION));
}
/// <summary>
/// This function will initialize the configuration according to a predefined
/// set of parameters (referred to by 'preset') and a given quality factor.
/// This function can be called as a replacement to WebPConfigInit(). Will return false in case of error.
/// </summary>
/// <param name="config"></param>
/// <param name="preset"></param>
/// <param name="quality"></param>
/// <returns></returns>
public static int WebPConfigPreset(ref WebPConfig config, WebPPreset preset, float quality)
{
return(Decode.WebPConfigInitInternal(ref config, preset, quality, WEBP_ENCODER_ABI_VERSION));
}
//
/// <summary>
/// Retrieve features from the bitstream. The *features structure is filled
/// with information gathered from the bitstream.
/// Returns false in case of error or version mismatch.
/// In case of error, features->bitstream_status will reflect the error code.
/// </summary>
/// <param name="data"></param>
/// <param name="data_size"></param>
/// <param name="features"></param>
/// <returns></returns>
public static VP8StatusCode WebPGetFeatures(IntPtr data, UIntPtr data_size, ref WebPBitstreamFeatures features)
{
return(Decode.WebPGetFeaturesInternal(data, data_size, ref features, WEBP_DECODER_ABI_VERSION));
}
){kind=link}