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Add compression property to HEIF image metadata #2504

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Lovell Fuller 2021-06-13 21:51:36 +01:00
parent 75cddbdb6d
commit d000f57773
4 changed files with 24 additions and 0 deletions
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1
docs/api-input.md
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@ -22,6 +22,7 @@ A `Promise` is returned when `callback` is not provided.
* `pagePrimary`: Number of the primary page in a HEIF image * `pagePrimary`: Number of the primary page in a HEIF image
* `levels`: Details of each level in a multi-level image provided as an array of objects, requires libvips compiled with support for OpenSlide * `levels`: Details of each level in a multi-level image provided as an array of objects, requires libvips compiled with support for OpenSlide
* `subifds`: Number of Sub Image File Directories in an OME-TIFF image * `subifds`: Number of Sub Image File Directories in an OME-TIFF image
* `compression`: The encoder used to compress an HEIF file, `av1` (AVIF) or `hevc` (HEIC)
* `hasProfile`: Boolean indicating the presence of an embedded ICC profile * `hasProfile`: Boolean indicating the presence of an embedded ICC profile
* `hasAlpha`: Boolean indicating the presence of an alpha transparency channel * `hasAlpha`: Boolean indicating the presence of an alpha transparency channel
* `orientation`: Number value of the EXIF Orientation header, if present * `orientation`: Number value of the EXIF Orientation header, if present

3
docs/changelog.md
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@ -8,6 +8,9 @@ Requires libvips v8.11.0
* Drop support for Node.js 10, now requires Node.js >= 12.13.0. * Drop support for Node.js 10, now requires Node.js >= 12.13.0.
* Add `compression` property to HEIF image metadata.
[#2504](https://github.com/lovell/sharp/issues/2504)
* AVIF encoding now defaults to `4:4:4` chroma subsampling. * AVIF encoding now defaults to `4:4:4` chroma subsampling.
[#2562](https://github.com/lovell/sharp/issues/2562) [#2562](https://github.com/lovell/sharp/issues/2562)

1
lib/input.js
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@ -271,6 +271,7 @@ function _isStreamInput () {
* - `pagePrimary`: Number of the primary page in a HEIF image * - `pagePrimary`: Number of the primary page in a HEIF image
* - `levels`: Details of each level in a multi-level image provided as an array of objects, requires libvips compiled with support for OpenSlide * - `levels`: Details of each level in a multi-level image provided as an array of objects, requires libvips compiled with support for OpenSlide
* - `subifds`: Number of Sub Image File Directories in an OME-TIFF image * - `subifds`: Number of Sub Image File Directories in an OME-TIFF image
* - `compression`: The encoder used to compress an HEIF file, `av1` (AVIF) or `hevc` (HEIC)
* - `hasProfile`: Boolean indicating the presence of an embedded ICC profile * - `hasProfile`: Boolean indicating the presence of an embedded ICC profile
* - `hasAlpha`: Boolean indicating the presence of an alpha transparency channel * - `hasAlpha`: Boolean indicating the presence of an alpha transparency channel
* - `orientation`: Number value of the EXIF Orientation header, if present * - `orientation`: Number value of the EXIF Orientation header, if present

19
test/unit/metadata.js
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@ -724,6 +724,25 @@ describe('Image metadata', function () {
}) })
); );
it('AVIF', async () => {
const metadata = await sharp(fixtures.inputAvif).metadata();
assert.deepStrictEqual(metadata, {
format: 'heif',
width: 2048,
height: 858,
space: 'srgb',
channels: 3,
depth: 'uchar',
isProgressive: false,
pages: 1,
pageHeight: 858,
pagePrimary: 0,
compression: 'av1',
hasProfile: false,
hasAlpha: false
});
});
it('File input with corrupt header fails gracefully', function (done) { it('File input with corrupt header fails gracefully', function (done) {
sharp(fixtures.inputJpgWithCorruptHeader) sharp(fixtures.inputJpgWithCorruptHeader)
.metadata(function (err) { .metadata(function (err) {