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pngdec.c: support ImageMagick app1 exif text data

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Test file created with ImageMagick 6.9.13-12:

```
convert test_exif.png test_app1_exif.png
```

Bug: webp:398066379
Change-Id: I10a20de5699fabb0906045994d7d1f4b9e951973
This commit is contained in:
James Zern 2025-02-27 19:09:28 -08:00
parent 815fc1e110
commit 319860e919
1 changed files with 2 additions and 0 deletions
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2
imageio/pngdec.c
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@ -139,6 +139,8 @@ static const struct {
{ "Raw profile type xmp", ProcessRawProfile, METADATA_OFFSET(xmp) },
// Exiftool puts exif data in APP1 chunk, too.
{ "Raw profile type APP1", ProcessRawProfile, METADATA_OFFSET(exif) },
// ImageMagick uses lowercase app1.
{ "Raw profile type app1", ProcessRawProfile, METADATA_OFFSET(exif) },
// XMP Specification Part 3, Section 3 #PNG
{ "XML:com.adobe.xmp", MetadataCopy, METADATA_OFFSET(xmp) },
{ NULL, NULL, 0 },