114 lines
2.4 KiB
PHP
114 lines
2.4 KiB
PHP
<?php
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use MediaWiki\MainConfigNames;
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use MediaWiki\Shell\Shell;
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/**
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* Tests related to JPEG chroma subsampling via $wgJpegPixelFormat setting.
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*
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* @group Media
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* @group medium
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*/
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class JpegPixelFormatTest extends MediaWikiMediaTestCase {
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/**
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* Mark this test as creating thumbnail files.
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* @inheritDoc
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*/
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protected function createsThumbnails() {
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return true;
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}
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/**
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* @dataProvider providePixelFormats
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* @covers BitmapHandler::imageMagickSubsampling
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*/
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public function testPixelFormatRendering( $sourceFile, $pixelFormat, $samplingFactor ) {
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global $wgUseImageMagick, $wgUseImageResize;
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if ( !$wgUseImageMagick ) {
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$this->markTestSkipped( "This test is only applicable when using ImageMagick thumbnailing" );
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}
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if ( !$wgUseImageResize ) {
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$this->markTestSkipped( "This test is only applicable when using thumbnailing" );
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}
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$fmtStr = var_export( $pixelFormat, true );
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$this->overrideConfigValue( MainConfigNames::JpegPixelFormat, $pixelFormat );
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$file = $this->dataFile( $sourceFile, 'image/jpeg' );
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$params = [
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'width' => 320,
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];
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$thumb = $file->transform( $params, File::RENDER_NOW | File::RENDER_FORCE );
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$this->assertTrue( !$thumb->isError(), "created JPEG thumbnail for pixel format $fmtStr" );
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$path = $thumb->getLocalCopyPath();
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$this->assertIsString( $path, "path returned for JPEG thumbnail for $fmtStr" );
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$result = Shell::command( 'identify',
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'-format',
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'%[jpeg:sampling-factor]',
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$path
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)->execute();
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$this->assertSame( 0,
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$result->getExitCode(),
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"ImageMagick's identify command should return success"
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);
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$expected = $samplingFactor;
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$actual = trim( $result->getStdout() );
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$this->assertEquals(
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$expected,
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$actual,
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"IM identify expects JPEG chroma subsampling \"$expected\" for $fmtStr"
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);
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}
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public static function providePixelFormats() {
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return [
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// From 4:4:4 source file
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[
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'yuv444.jpg',
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false,
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'1x1,1x1,1x1'
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],
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[
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'yuv444.jpg',
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'yuv444',
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'1x1,1x1,1x1'
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],
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[
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'yuv444.jpg',
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'yuv422',
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'2x1,1x1,1x1'
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],
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[
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'yuv444.jpg',
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'yuv420',
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'2x2,1x1,1x1'
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],
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// From 4:2:0 source file
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[
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'yuv420.jpg',
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false,
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'2x2,1x1,1x1'
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],
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[
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'yuv420.jpg',
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'yuv444',
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'1x1,1x1,1x1'
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],
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[
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'yuv420.jpg',
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'yuv422',
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'2x1,1x1,1x1'
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],
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[
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'yuv420.jpg',
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'yuv420',
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'2x2,1x1,1x1'
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]
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];
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}
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}
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