From d47f8b48935d258f4c5c3e2267911753bebd5214 Mon Sep 17 00:00:00 2001 From: Biswakalyan Bhuyan Date: Mon, 14 Nov 2022 16:43:12 +0530 Subject: id card --- .../python3.10/site-packages/PIL/JpegPresets.py | 240 --------------------- 1 file changed, 240 deletions(-) delete mode 100644 env/lib/python3.10/site-packages/PIL/JpegPresets.py (limited to 'env/lib/python3.10/site-packages/PIL/JpegPresets.py') diff --git a/env/lib/python3.10/site-packages/PIL/JpegPresets.py b/env/lib/python3.10/site-packages/PIL/JpegPresets.py deleted file mode 100644 index a678e24..0000000 --- a/env/lib/python3.10/site-packages/PIL/JpegPresets.py +++ /dev/null @@ -1,240 +0,0 @@ -""" -JPEG quality settings equivalent to the Photoshop settings. -Can be used when saving JPEG files. - -The following presets are available by default: -``web_low``, ``web_medium``, ``web_high``, ``web_very_high``, ``web_maximum``, -``low``, ``medium``, ``high``, ``maximum``. -More presets can be added to the :py:data:`presets` dict if needed. - -To apply the preset, specify:: - - quality="preset_name" - -To apply only the quantization table:: - - qtables="preset_name" - -To apply only the subsampling setting:: - - subsampling="preset_name" - -Example:: - - im.save("image_name.jpg", quality="web_high") - -Subsampling ------------ - -Subsampling is the practice of encoding images by implementing less resolution -for chroma information than for luma information. -(ref.: https://en.wikipedia.org/wiki/Chroma_subsampling) - -Possible subsampling values are 0, 1 and 2 that correspond to 4:4:4, 4:2:2 and -4:2:0. - -You can get the subsampling of a JPEG with the -:func:`.JpegImagePlugin.get_sampling` function. - -In JPEG compressed data a JPEG marker is used instead of an EXIF tag. -(ref.: https://exiv2.org/tags.html) - - -Quantization tables -------------------- - -They are values use by the DCT (Discrete cosine transform) to remove -*unnecessary* information from the image (the lossy part of the compression). -(ref.: https://en.wikipedia.org/wiki/Quantization_matrix#Quantization_matrices, -https://en.wikipedia.org/wiki/JPEG#Quantization) - -You can get the quantization tables of a JPEG with:: - - im.quantization - -This will return a dict with a number of lists. You can pass this dict -directly as the qtables argument when saving a JPEG. - -The quantization table format in presets is a list with sublists. These formats -are interchangeable. - -Libjpeg ref.: -https://web.archive.org/web/20120328125543/http://www.jpegcameras.com/libjpeg/libjpeg-3.html - -""" - -# fmt: off -presets = { - 'web_low': {'subsampling': 2, # "4:2:0" - 'quantization': [ - [20, 16, 25, 39, 50, 46, 62, 68, - 16, 18, 23, 38, 38, 53, 65, 68, - 25, 23, 31, 38, 53, 65, 68, 68, - 39, 38, 38, 53, 65, 68, 68, 68, - 50, 38, 53, 65, 68, 68, 68, 68, - 46, 53, 65, 68, 68, 68, 68, 68, - 62, 65, 68, 68, 68, 68, 68, 68, - 68, 68, 68, 68, 68, 68, 68, 68], - [21, 25, 32, 38, 54, 68, 68, 68, - 25, 28, 24, 38, 54, 68, 68, 68, - 32, 24, 32, 43, 66, 68, 68, 68, - 38, 38, 43, 53, 68, 68, 68, 68, - 54, 54, 66, 68, 68, 68, 68, 68, - 68, 68, 68, 68, 68, 68, 68, 68, - 68, 68, 68, 68, 68, 68, 68, 68, - 68, 68, 68, 68, 68, 68, 68, 68] - ]}, - 'web_medium': {'subsampling': 2, # "4:2:0" - 'quantization': [ - [16, 11, 11, 16, 23, 27, 31, 30, - 11, 12, 12, 15, 20, 23, 23, 30, - 11, 12, 13, 16, 23, 26, 35, 47, - 16, 15, 16, 23, 26, 37, 47, 64, - 23, 20, 23, 26, 39, 51, 64, 64, - 27, 23, 26, 37, 51, 64, 64, 64, - 31, 23, 35, 47, 64, 64, 64, 64, - 30, 30, 47, 64, 64, 64, 64, 64], - [17, 15, 17, 21, 20, 26, 38, 48, - 15, 19, 18, 17, 20, 26, 35, 43, - 17, 18, 20, 22, 26, 30, 46, 53, - 21, 17, 22, 28, 30, 39, 53, 64, - 20, 20, 26, 30, 39, 48, 64, 64, - 26, 26, 30, 39, 48, 63, 64, 64, - 38, 35, 46, 53, 64, 64, 64, 64, - 48, 43, 53, 64, 64, 64, 64, 64] - ]}, - 'web_high': {'subsampling': 0, # "4:4:4" - 'quantization': [ - [6, 4, 4, 6, 9, 11, 12, 16, - 4, 5, 5, 6, 8, 10, 12, 12, - 4, 5, 5, 6, 10, 12, 14, 19, - 6, 6, 6, 11, 12, 15, 19, 28, - 9, 8, 10, 12, 16, 20, 27, 31, - 11, 10, 12, 15, 20, 27, 31, 31, - 12, 12, 14, 19, 27, 31, 31, 31, - 16, 12, 19, 28, 31, 31, 31, 31], - [7, 7, 13, 24, 26, 31, 31, 31, - 7, 12, 16, 21, 31, 31, 31, 31, - 13, 16, 17, 31, 31, 31, 31, 31, - 24, 21, 31, 31, 31, 31, 31, 31, - 26, 31, 31, 31, 31, 31, 31, 31, - 31, 31, 31, 31, 31, 31, 31, 31, - 31, 31, 31, 31, 31, 31, 31, 31, - 31, 31, 31, 31, 31, 31, 31, 31] - ]}, - 'web_very_high': {'subsampling': 0, # "4:4:4" - 'quantization': [ - [2, 2, 2, 2, 3, 4, 5, 6, - 2, 2, 2, 2, 3, 4, 5, 6, - 2, 2, 2, 2, 4, 5, 7, 9, - 2, 2, 2, 4, 5, 7, 9, 12, - 3, 3, 4, 5, 8, 10, 12, 12, - 4, 4, 5, 7, 10, 12, 12, 12, - 5, 5, 7, 9, 12, 12, 12, 12, - 6, 6, 9, 12, 12, 12, 12, 12], - [3, 3, 5, 9, 13, 15, 15, 15, - 3, 4, 6, 11, 14, 12, 12, 12, - 5, 6, 9, 14, 12, 12, 12, 12, - 9, 11, 14, 12, 12, 12, 12, 12, - 13, 14, 12, 12, 12, 12, 12, 12, - 15, 12, 12, 12, 12, 12, 12, 12, - 15, 12, 12, 12, 12, 12, 12, 12, - 15, 12, 12, 12, 12, 12, 12, 12] - ]}, - 'web_maximum': {'subsampling': 0, # "4:4:4" - 'quantization': [ - [1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 2, - 1, 1, 1, 1, 1, 1, 2, 2, - 1, 1, 1, 1, 1, 2, 2, 3, - 1, 1, 1, 1, 2, 2, 3, 3, - 1, 1, 1, 2, 2, 3, 3, 3, - 1, 1, 2, 2, 3, 3, 3, 3], - [1, 1, 1, 2, 2, 3, 3, 3, - 1, 1, 1, 2, 3, 3, 3, 3, - 1, 1, 1, 3, 3, 3, 3, 3, - 2, 2, 3, 3, 3, 3, 3, 3, - 2, 3, 3, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 3, 3, 3] - ]}, - 'low': {'subsampling': 2, # "4:2:0" - 'quantization': [ - [18, 14, 14, 21, 30, 35, 34, 17, - 14, 16, 16, 19, 26, 23, 12, 12, - 14, 16, 17, 21, 23, 12, 12, 12, - 21, 19, 21, 23, 12, 12, 12, 12, - 30, 26, 23, 12, 12, 12, 12, 12, - 35, 23, 12, 12, 12, 12, 12, 12, - 34, 12, 12, 12, 12, 12, 12, 12, - 17, 12, 12, 12, 12, 12, 12, 12], - [20, 19, 22, 27, 20, 20, 17, 17, - 19, 25, 23, 14, 14, 12, 12, 12, - 22, 23, 14, 14, 12, 12, 12, 12, - 27, 14, 14, 12, 12, 12, 12, 12, - 20, 14, 12, 12, 12, 12, 12, 12, - 20, 12, 12, 12, 12, 12, 12, 12, - 17, 12, 12, 12, 12, 12, 12, 12, - 17, 12, 12, 12, 12, 12, 12, 12] - ]}, - 'medium': {'subsampling': 2, # "4:2:0" - 'quantization': [ - [12, 8, 8, 12, 17, 21, 24, 17, - 8, 9, 9, 11, 15, 19, 12, 12, - 8, 9, 10, 12, 19, 12, 12, 12, - 12, 11, 12, 21, 12, 12, 12, 12, - 17, 15, 19, 12, 12, 12, 12, 12, - 21, 19, 12, 12, 12, 12, 12, 12, - 24, 12, 12, 12, 12, 12, 12, 12, - 17, 12, 12, 12, 12, 12, 12, 12], - [13, 11, 13, 16, 20, 20, 17, 17, - 11, 14, 14, 14, 14, 12, 12, 12, - 13, 14, 14, 14, 12, 12, 12, 12, - 16, 14, 14, 12, 12, 12, 12, 12, - 20, 14, 12, 12, 12, 12, 12, 12, - 20, 12, 12, 12, 12, 12, 12, 12, - 17, 12, 12, 12, 12, 12, 12, 12, - 17, 12, 12, 12, 12, 12, 12, 12] - ]}, - 'high': {'subsampling': 0, # "4:4:4" - 'quantization': [ - [6, 4, 4, 6, 9, 11, 12, 16, - 4, 5, 5, 6, 8, 10, 12, 12, - 4, 5, 5, 6, 10, 12, 12, 12, - 6, 6, 6, 11, 12, 12, 12, 12, - 9, 8, 10, 12, 12, 12, 12, 12, - 11, 10, 12, 12, 12, 12, 12, 12, - 12, 12, 12, 12, 12, 12, 12, 12, - 16, 12, 12, 12, 12, 12, 12, 12], - [7, 7, 13, 24, 20, 20, 17, 17, - 7, 12, 16, 14, 14, 12, 12, 12, - 13, 16, 14, 14, 12, 12, 12, 12, - 24, 14, 14, 12, 12, 12, 12, 12, - 20, 14, 12, 12, 12, 12, 12, 12, - 20, 12, 12, 12, 12, 12, 12, 12, - 17, 12, 12, 12, 12, 12, 12, 12, - 17, 12, 12, 12, 12, 12, 12, 12] - ]}, - 'maximum': {'subsampling': 0, # "4:4:4" - 'quantization': [ - [2, 2, 2, 2, 3, 4, 5, 6, - 2, 2, 2, 2, 3, 4, 5, 6, - 2, 2, 2, 2, 4, 5, 7, 9, - 2, 2, 2, 4, 5, 7, 9, 12, - 3, 3, 4, 5, 8, 10, 12, 12, - 4, 4, 5, 7, 10, 12, 12, 12, - 5, 5, 7, 9, 12, 12, 12, 12, - 6, 6, 9, 12, 12, 12, 12, 12], - [3, 3, 5, 9, 13, 15, 15, 15, - 3, 4, 6, 10, 14, 12, 12, 12, - 5, 6, 9, 14, 12, 12, 12, 12, - 9, 10, 14, 12, 12, 12, 12, 12, - 13, 14, 12, 12, 12, 12, 12, 12, - 15, 12, 12, 12, 12, 12, 12, 12, - 15, 12, 12, 12, 12, 12, 12, 12, - 15, 12, 12, 12, 12, 12, 12, 12] - ]}, -} -# fmt: on -- cgit v1.2.3-59-g8ed1b