async Task <FFGifDrawable> PlatformGenerateGifImageAsync(string path, ImageSource source, Stream imageData, ImageInformation imageInformation, bool enableTransformations, bool isPlaceholder)
{
if (imageData == null)
{
throw new ArgumentNullException(nameof(imageData));
}
ThrowIfCancellationRequested();
try
{
//TODO Add caching, transformations, downsampling, etc
var gifDecoder = new GifDecoder();
await gifDecoder.ReadGifAsync(imageData);
ThrowIfCancellationRequested();
var bitmap = gifDecoder.GetBitmap();
ThrowIfCancellationRequested();
return(new FFGifDrawable(Context.Resources, bitmap, gifDecoder));
}
finally
{
imageData?.Dispose();
}
}
async Task <FFGifDrawable> PlatformGenerateGifImageAsync(string path, ImageSource source, Stream imageData, ImageInformation imageInformation, bool enableTransformations, bool isPlaceholder)
{
if (imageData == null)
{
throw new ArgumentNullException(nameof(imageData));
}
ThrowIfCancellationRequested();
try
{
int downsampleWidth = 0;
int downsampleHeight = 0;
if (Parameters.DownSampleSize != null && (Parameters.DownSampleSize.Item1 > 0 || Parameters.DownSampleSize.Item2 > 0))
{
downsampleWidth = Parameters.DownSampleSize.Item1;
downsampleHeight = Parameters.DownSampleSize.Item2;
}
if (Parameters.DownSampleUseDipUnits)
{
downsampleWidth = downsampleWidth.DpToPixels();
downsampleHeight = downsampleHeight.DpToPixels();
}
var gifDecoder = new GifDecoder(downsampleWidth, downsampleHeight, (bmp) =>
{
return(PlatformTransformAsync(path, source, enableTransformations, isPlaceholder, bmp));
});
await gifDecoder.ReadGifAsync(imageData);
ThrowIfCancellationRequested();
var bitmap = gifDecoder.GetBitmap();
ThrowIfCancellationRequested();
return(new FFGifDrawable(Context.Resources, bitmap, gifDecoder));
}
finally
{
imageData.TryDispose();
}
}
