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wicdec: fail with animated images

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this matches the behavior of other decoders (WebP) in imageio.

Bug: webp:479
Change-Id: Ifcae0f38d7eebde31cd294070a6dd1f80cb30043
This commit is contained in:
James Zern 2020-11-19 19:49:11 -08:00
parent ab2d08a842
commit 26faf7706b
1 changed files with 9 additions and 3 deletions
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12
imageio/wicdec.c
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@ -298,9 +298,15 @@ int ReadPictureWithWIC(const char* const filename,
factory, stream, NULL,
WICDecodeMetadataCacheOnDemand, &decoder));
IFS(IWICBitmapDecoder_GetFrameCount(decoder, &frame_count));
if (SUCCEEDED(hr) && frame_count == 0) {
fprintf(stderr, "No frame found in input file.\n");
hr = E_FAIL;
if (SUCCEEDED(hr)) {
if (frame_count == 0) {
fprintf(stderr, "No frame found in input file.\n");
hr = E_FAIL;
} else if (frame_count > 1) {
// WIC will be tried before native WebP decoding so avoid duplicating the
// error message.
hr = E_FAIL;
}
}
IFS(IWICBitmapDecoder_GetFrame(decoder, 0, &frame));
IFS(IWICBitmapFrameDecode_GetPixelFormat(frame, &src_pixel_format));