From ae59b039564eefdebec4ea67a712a115d0e1ab67 Mon Sep 17 00:00:00 2001 From: Andrew Murray Date: Tue, 31 Dec 2024 21:40:12 +1100 Subject: [PATCH] Do not use MozJPEG progressive default --- Tests/test_file_jpeg.py | 13 ++++++++++--- src/libImaging/JpegEncode.c | 11 ++++++++++- 2 files changed, 20 insertions(+), 4 deletions(-) diff --git a/Tests/test_file_jpeg.py b/Tests/test_file_jpeg.py index bf0dec4b8..d4c0636c6 100644 --- a/Tests/test_file_jpeg.py +++ b/Tests/test_file_jpeg.py @@ -281,7 +281,10 @@ class TestFileJpeg: assert not im2.info.get("progressive") assert im3.info.get("progressive") - assert_image_equal(im1, im3) + if features.check_feature("mozjpeg"): + assert_image_similar(im1, im3, 9.39) + else: + assert_image_equal(im1, im3) assert im1_bytes >= im3_bytes def test_progressive_large_buffer(self, tmp_path: Path) -> None: @@ -424,8 +427,12 @@ class TestFileJpeg: im2 = self.roundtrip(hopper(), progressive=1) im3 = self.roundtrip(hopper(), progression=1) # compatibility - assert_image_equal(im1, im2) - assert_image_equal(im1, im3) + if features.check_feature("mozjpeg"): + assert_image_similar(im1, im2, 9.39) + assert_image_similar(im1, im3, 9.39) + else: + assert_image_equal(im1, im2) + assert_image_equal(im1, im3) assert im2.info.get("progressive") assert im2.info.get("progression") assert im3.info.get("progressive") diff --git a/src/libImaging/JpegEncode.c b/src/libImaging/JpegEncode.c index 4372d51d5..3c11eac22 100644 --- a/src/libImaging/JpegEncode.c +++ b/src/libImaging/JpegEncode.c @@ -134,7 +134,16 @@ ImagingJpegEncode(Imaging im, ImagingCodecState state, UINT8 *buf, int bytes) { return -1; } - /* Compressor configuration */ + /* Compressor configuration */ +#ifdef JPEG_C_PARAM_SUPPORTED + /* MozJPEG */ + if (!context->progressive) { + /* Do not use MozJPEG progressive default */ + jpeg_c_set_int_param( + &context->cinfo, JINT_COMPRESS_PROFILE, JCP_FASTEST + ); + } +#endif jpeg_set_defaults(&context->cinfo); /* Prevent RGB -> YCbCr conversion */