/// <summary>
/// Ensures the result is a success
/// by throwing an exception when that's not the case.
/// </summary>
/// <param name="result">The result returned by Skia.</param>
public static void EnsureSuccess(SKCodecResult result)
{
if (result != SKCodecResult.Success)
{
throw new SkiaCodecException(result);
}
}
public static SKCodec Create(SKStream stream, out SKCodecResult result)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
var codec = GetObject <SKCodec> (SkiaApi.sk_codec_new_from_stream(stream.Handle, out result));
stream.RevokeOwnership();
return(codec);
}
public static SKCodec Create(string filename, out SKCodecResult result)
{
var stream = SKFileStream.OpenStream(filename);
if (stream == null)
{
result = SKCodecResult.InternalError;
return(null);
}
return(Create(stream, out result));
}
public static SKCodec Create(SKStream stream, out SKCodecResult result)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
if (stream is SKFileStream filestream && !filestream.IsValid)
throw new ArgumentException("File stream was not valid.", nameof(stream));
fixed(SKCodecResult *r = &result)
{
var codec = GetObject(SkiaApi.sk_codec_new_from_stream(stream.Handle, r));
stream.RevokeOwnership(codec);
return(codec);
}
}
private SKBitmap LoadBitmap(Stream stream, out SKEncodedOrigin origin)
{
using SKManagedStream s = new SKManagedStream(stream);
using SKCodec codec = SKCodec.Create(s);
origin = codec.EncodedOrigin;
SKImageInfo info = codec.Info;
SKBitmap bitmap = new SKBitmap(info.Width, info.Height, SKImageInfo.PlatformColorType, info.IsOpaque ? SKAlphaType.Opaque : SKAlphaType.Premul);
SKCodecResult result = codec.GetPixels(bitmap.Info, bitmap.GetPixels(out IntPtr length));
if (result == SKCodecResult.Success || result == SKCodecResult.IncompleteInput)
{
return(bitmap);
}
else
{
throw new ArgumentException("Unable to load bitmap from provided data");
}
}
public static SKCodec Create(Stream stream, out SKCodecResult result) => Create(WrapManagedStream(stream), out result);
/// <summary>
/// Initializes a new instance of the <see cref="SkiaCodecException" /> class
/// with a specified error message.
/// </summary>
/// <param name="result">The non-successful codec result returned by Skia.</param>
/// <param name="message">The message that describes the error.</param>
public SkiaCodecException(SKCodecResult result, string message)
: base(message)
{
CodecResult = result;
}
/// <summary>
/// Initializes a new instance of the <see cref="SkiaCodecException" /> class.
/// </summary>
/// <param name="result">The non-successful codec result returned by Skia.</param>
public SkiaCodecException(SKCodecResult result) : base()
{
CodecResult = result;
}
