| /third_party/EGL/extensions/EXT/ |
| D | EGL_EXT_surface_compression.txt | 45 Applications may wish to take advantage of framebuffer compression. Some
46 platforms may support framebuffer compression at fixed bitrates. Such
47 compression algorithms generally produce results that are visually lossless,
51 This extension enables applications to opt-in to fixed-rate compression
54 Compression may not be supported for all framebuffer formats. It can still
55 be requested for all formats and applications can query what level of compression
101 EGL_SURFACE_COMPRESSION_EXT specifies the fixed-rate compression that may
104 compression is disabled.
106 then the implementation may enable compression at a default,
109 implementation may enable fixed-rate compression with a bitrate of at
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| /third_party/vk-gl-cts/external/vulkan-docs/src/proposals/ |
| D | VK_EXT_image_compression_control.adoc | 10 This document proposes adding support for fixed-rate, or 'lossy', image compression.
14 Many existing implementations support some form of lossless image or framebuffer compression.
16 (The use of image compression (or not) can result in performance differences that are visible in pr…
18 Fixed-rate compression formats have so far not been supported.
19 As the term implies, these compression techniques are done at defined bitrates, and may therefore l…
22 The fixed-rate compression algorithms are implementation-specific and not standardized.
25 …lementation may not support all possible compression rates and may not be able to use the requeste…
26 We want to expose a query to let applications understand what compression rates are available and w…
30 To enable fixed-rate compression, two options were considered:
32 . Add the option to enable compression on existing formats
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| /third_party/openssl/doc/man3/ |
| D | SSL_COMP_add_compression_method.pod | 7 - handle SSL/TLS integrated compression methods
26 SSL_COMP_add_compression_method() adds the compression method B<cm> with
27 the identifier B<id> to the list of available compression methods. This
32 compression methods or NULL on error.
34 SSL_COMP_get0_name() returns the name of the compression method B<comp>.
36 SSL_COMP_get_id() returns the id of the compression method B<comp>.
39 maintain the internal table of compression methods.
43 The TLS standard (or SSLv3) allows the integration of compression methods
44 into the communication. The TLS RFC does however not specify compression
46 way to integrate compression with unknown peers. It is therefore currently not
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| /third_party/lz4/programs/ |
| D | lz4.1 | 20 …compression algorithm\. It provides a default compression speed of typically > 500 MB/s per core\.…
32 \fBlz4 file\.lz4\fR will default to decompression (use \fB\-z\fR to force compression)
38 \fBlz4\fR shows real\-time notification statistics during compression or decompression of a single …
58 It\'s possible to opt\-in to erase source files on successful compression or decompression, using \…
94 …\fB\-\-decompress\fR by default)\. \fB\-z\fR can also be used to force compression of an already c…
106 Benchmark mode, using \fB#\fR compression level\.
116 Compression level, with # being any value from 1 to 12\. Higher values trade compression speed for …
120 …compression levels\. The higher the value, the faster the compression speed, at the cost of some c…
124 Set highest compression level\. Same as \-12\.
128 Use \fB#\fR threads for compression\. When \fB0\fR, or none provided: automatically determined from…
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| D | lz4.1.md | 21 `lz4` is a CLI based on `liblz4`, an extremely fast implementation of lossless compression algorith…
22 It provides a default compression speed of typically > 500 MB/s per core.
23 Speed can traded for higher compression ratio, by increasing the compression level parameter.
34 * `lz4 file.lz4` will default to decompression (use `-z` to force compression)
37 during compression or decompression of a single file
59 on successful compression or decompression, using `--rm` command.
98 `-z` can also be used to force compression of an already compressed
112 Benchmark mode, using `#` compression level.
122 Compression level, with # being any value from 1 to 12.
123 Higher values trade compression speed for compression ratio.
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| D | README.md | 30 - `LZ4_CLEVEL_DEFAULT`: default compression level when none provided. Default is `1`.
41 …ipt for example) but there is no way to pass `lz4` parameters to influence the compression session.
45 …EL` can be used to specify a default compression level that `lz4` employs for compression when no …
47 …used to specify a default number of threads that `lz4` will employ for compression. Executable def…
55 …4` CLI includes an in-memory compression benchmark module, triggered by command `-b#`, with `#` re…
58 …undled into the same benchmark session (though each file is a separate compression / decompression…
61 The benchmark measures ratio, compressed size, compression and decompression speed.
62 One can select multiple compression levels starting from `-b` and ending with `-e` (ascending).
75 -1 : Fast compression (default)
76 -9 : High compression
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| /third_party/openGLES/extensions/EXT/ |
| D | EXT_texture_storage_compression.txt | 42 Applications may wish to take advantage of framebuffer compression. Some
43 platforms may support framebuffer compression at fixed bitrates. Such
44 compression algorithms generally produce results that are visually lossless,
48 This extension enables applications to opt-in to compression for
101 compression rate that was actually applied to the texture."
135 SURFACE_COMPRESSION_EXT specifies if fixed-rate compression can be
138 compression is disabled.
140 implementation may enable compression at a default, implementation-defined,
143 implementation may enable fixed-rate compression with a bitrate of at
146 implementation may enable fixed-rate compression with a bitrate of at
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| D | EXT_EGL_image_storage_compression.txt | 42 Applications may wish to take advantage of framebuffer compression. Some
43 platforms may support framebuffer compression at fixed bitrates. Such
44 compression algorithms generally produce results that are visually lossless,
94 SURFACE_COMPRESSION_EXT specifies whether fixed-rate compression
97 must not use fixed-rate compression.
102 <image> may use fixed-rate compression.
110 Fixed-rate compression is done in an implementation-defined manner and may
131 RESOLVED. No. We only allow fixed-rate compression for immutable textures.
133 2. Do we need to specify compression rates in this extension?
136 and the compression ratio must have been decided at that time.
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| /third_party/lzma/DOC/ |
| D | lzma-sdk.txt | 6 use 7z / LZMA / LZMA2 / XZ compression.
8 LZMA is an improved version of famous LZ77 compression algorithm.
9 It was improved in way of maximum increasing of compression ratio,
13 LZMA2 is a LZMA based compression method. LZMA2 provides better
14 multithreading support for compression than LZMA and some other improvements.
16 7z is a file format for data compression and file archiving.
17 7z is a main file format for 7-Zip compression program (www.7-zip.org).
18 7z format supports different compression methods: LZMA, LZMA2 and others.
21 XZ is a file format for data compression that uses LZMA2 compression.
23 improved compression ratio, splitting to blocks and streams,
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| /third_party/skia/third_party/externals/freetype/src/gzip/ |
| D | zlib.h | 1 /* zlib.h -- interface of the 'zlib' general purpose compression library
43 The 'zlib' compression library provides in-memory compression and
45 data. This version of the library supports only one compression method
49 Compression can be done in a single step if the buffers are large
51 repeated calls of the compression function. In the latter case, the
96 compression library and must not be updated by the application.
100 memory management. The compression library attaches no meaning to the
114 compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h).
117 progress reports. After compression, total_in holds the total size of
141 /* Return codes for the compression/decompression functions. Negative
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| /third_party/lzma/ |
| D | README.md | 8 use 7z / LZMA / LZMA2 / XZ compression.
10 LZMA is an improved version of famous LZ77 compression algorithm.
11 It was improved in way of maximum increasing of compression ratio,
15 LZMA2 is a LZMA based compression method. LZMA2 provides better
16 multithreading support for compression than LZMA and some other improvements.
18 7z is a file format for data compression and file archiving.
19 7z is a main file format for 7-Zip compression program (www.7-zip.org).
20 7z format supports different compression methods: LZMA, LZMA2 and others.
23 XZ is a file format for data compression that uses LZMA2 compression.
25 improved compression ratio, splitting to blocks and streams
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| /third_party/skia/third_party/externals/opengl-registry/extensions/SGIX/ |
| D | SGIX_image_compression.txt | 27 side. These new compression and decompression operations take place
33 compression techniques, without defining any specific compression
34 formats. Other extensions will define compression formats which make
38 for these storage modes is NONE; further compression extensions will
41 Many compression techniques utilize various component subsamplings, so
55 must be performed before compression.
57 Some compression formats specify a color space in which the pixels are
58 expressed before compression and after decompression. To make support
60 between the natural color space of the compression format and RGB.
65 converted as necessary before compression. The client may wish to
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| /third_party/openGLES/extensions/SGIX/ |
| D | SGIX_image_compression.txt | 27 side. These new compression and decompression operations take place
33 compression techniques, without defining any specific compression
34 formats. Other extensions will define compression formats which make
38 for these storage modes is NONE; further compression extensions will
41 Many compression techniques utilize various component subsamplings, so
55 must be performed before compression.
57 Some compression formats specify a color space in which the pixels are
58 expressed before compression and after decompression. To make support
60 between the natural color space of the compression format and RGB.
65 converted as necessary before compression. The client may wish to
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| /third_party/f2fs-tools/man/ |
| D | sload.f2fs.8 | 31 .I compression-algorithm
35 .I file-extension-to-exclude-from-compression
38 .I file-extension-to-include-for-compression
77 Enable a cluster-based file compression.
88 .BI \-a " compression-algorithm"
89 Choose the algorithm for compression. Available options are:
93 .BI \-i " file-extension-to-include-for-compression"
94 Specify a file extension to include for the compression.
99 .BI \-x " file-extension-to-exclude-from-compression"
100 Specify a file extension to exclude from compression.
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| /third_party/vk-gl-cts/external/vulkan-docs/src/appendices/ |
| D | VK_EXT_image_compression_control.adoc | 22 This extension enables fixed-rate image compression and adds the ability to
23 control when this kind of compression can be applied.
24 Many implementations support some form of framebuffer compression.
25 This is typically transparent to applications as lossless compression
27 With fixed-rate compression, the compression is done at a defined bitrate.
28 Such compression algorithms generally produce results that are visually
31 The implementation may not be able to use the requested compression rate in
33 This extension adds a query that can be used to determine the compression
|
| /third_party/skia/third_party/externals/libwebp/man/ |
| D | gif2webp.1 | 36 Encode the image using lossy compression.
39 Mixed compression mode: optimize compression of the image by picking either
40 lossy or lossless compression for each frame heuristically.
43 Specify the compression factor for RGB channels between 0 and 100. The default
46 In case of lossless compression (default), a small factor enables faster
47 compression speed, but produces a larger file. Maximum compression is achieved
50 In case of lossy compression (specified by the \-lossy option), a small factor
55 Specify the compression method to use. This parameter controls the
61 larger file size and lower compression quality.
66 uses lossless compression by default, but can be combined with \-q, \-m,
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| /third_party/icu/docs/userguide/conversion/ |
| D | compression.md | 3 title: Compression
12 # Compression chapter
26 bandwidth usage and fewer storage devices. The compression scheme compresses
29 purpose file or disk-block based compression scheme. Note that the combination
30 of the Unicode compression algorithm plus disk-block based compression produces
38 For additional detail about the compression algorithm, which has been approved
40 Standard Compression Scheme for
43 The Standard Compression Scheme for Unicode (SCSU) is used to:
61 The compression scheme is mainly intended for use with short to medium length
64 input to traditional general purpose data compression schemes. It is not
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| /third_party/lz4/ |
| D | NEWS | 2 cli : multithreading compression support: improves speed by X times threads allocated
7 cli : fix dictionary compression benchmark on multiple files
9 lib : new level 2, offering mid-way performance (speed and compression)
10 lib : Improved lz4frame compression speed for small data (up to +160% at 1KB)
11 lib : Slightly faster (+5%) HC compression speed (levels 3-9), by @JunHe77
12 lib : dictionary compression support now in stable status
34 cli : `--no-crc` does not produce (compression) nor check (decompression) checksums
50 perf: improved dictionary compression speed, by @felixhandte
52 perf: reduced stack usage in high compression mode, by @Yanpas
77 api: better in-place decompression and compression support
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| /third_party/astc-encoder/Source/ |
| D | astcenccli_toplevel_help.cpp | 48 To perform a compression test, writing back the decompressed output, use:
85 Compression (ASTC) image format, a lossy compression format design
87 compressor implementation, supporting all of the compression
95 trade off compressed image quality against compression performance.
101 perform compression image quality analysis.
103 COMPRESSION
112 The input file path must match a valid file format for compression,
113 and the output file format must be a valid output for compression.
140 image quality at the expense of compression time. The quality level
151 For compression of production content we recommend using a quality
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| /third_party/python/Doc/library/ |
| D | zlib.rst | 1 :mod:`zlib` --- Compression compatible with :program:`gzip`
5 :synopsis: Low-level interface to compression and decompression routines
10 For applications that require data compression, the functions in this module
11 allow compression and decompression, using the zlib library. The zlib library
29 Exception raised on compression and decompression errors.
50 *level* is an integer from ``0`` to ``9`` or ``-1`` controlling the level of compression;
51 ``1`` (Z_BEST_SPEED) is fastest and produces the least compression, ``9`` (Z_BEST_COMPRESSION)
52 is slowest and produces the most. ``0`` (Z_NO_COMPRESSION) is no compression.
54 compromise between speed and compression (currently equivalent to level 6).
65 better compression at the expense of greater memory usage. The
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| /third_party/openssl/test/recipes/ |
| D | 70-test_comp.t | 50 #Test 1: Check that sending multiple compression methods in a TLSv1.2
57 ok(TLSProxy::Message->success(), "Non null compression");
59 #Test 2: NULL compression method must be present in TLSv1.2
64 ok(TLSProxy::Message->fail(), "NULL compression missing");
70 #Test 3: Check that sending multiple compression methods in a TLSv1.3
76 ok(TLSProxy::Message->fail(), "Non null compression (TLSv1.3)");
78 #Test 4: NULL compression method must be present in TLSv1.3
82 ok(TLSProxy::Message->fail(), "NULL compression missing (TLSv1.3)");
102 0x00, #Null compression method
103 0xff); #Unknown compression
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| /third_party/lzma/Java/SevenZip/Compression/LZMA/ |
| D | Decoder.java | 1 package SevenZip.Compression.LZMA;
3 import SevenZip.Compression.RangeCoder.BitTreeDecoder;
4 import SevenZip.Compression.LZMA.Base;
5 import SevenZip.Compression.LZ.OutWindow;
29 SevenZip.Compression.RangeCoder.Decoder.InitBitModels(m_Choice); in Init()
38 …public int Decode(SevenZip.Compression.RangeCoder.Decoder rangeDecoder, int posState) throws IOExc… in Decode()
59 SevenZip.Compression.RangeCoder.Decoder.InitBitModels(m_Decoders); in Init()
62 public byte DecodeNormal(SevenZip.Compression.RangeCoder.Decoder rangeDecoder) throws IOException in DecodeNormal()
71 …public byte DecodeWithMatchByte(SevenZip.Compression.RangeCoder.Decoder rangeDecoder, byte matchBy… in DecodeWithMatchByte()
124 …SevenZip.Compression.RangeCoder.Decoder m_RangeDecoder = new SevenZip.Compression.RangeCoder.Decod…
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| /third_party/astc-encoder/ |
| D | README.md | 3 The Arm® Adaptive Scalable Texture Compression (ASTC) Encoder, `astcenc`, is
5 texture compression standard.
13 This allows more assets to use compression, often at a reduced bitrate compared
27 The encoder supports compression of low dynamic range (BMP, JPEG, PNG, TGA) and
35 The encoder allows control over the compression time/quality tradeoff with
39 The encoder allows compression time and quality analysis by reporting the
40 compression time, and the Peak Signal-to-Noise Ratio (PSNR) between the input
52 It also supports all of the ASTC block sizes and compression modes, allowing
137 image quality for a relatively fast compression speed, so is a good starting
138 point for compression. The output is stored to a linear color space compressed
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| /third_party/libwebsockets/lib/roles/http/compression/ |
| D | README.md | 1 HTTP compression
4 This directory contains generic compression transforms that can be applied to
7 The compression transforms expose an "ops" type struct and a compressor name
9 ./private-lib-roles-http-compression.h.
11 Because the compression transform depends on being able to send on its output
13 `wsi->buflist_comp` that represents pre-compression transform data
14 ("input data" from the perspective of the compression transform) that was
|
| /third_party/openssl/test/ssl-tests/ |
| D | 22-compression.cnf.in | 10 ## Test Compression
24 "Options" => "Compression"
27 "Options" => "Compression"
39 "Options" => "Compression"
49 "Options" => "Compression"
74 "Options" => "Compression"
77 "Options" => "Compression",
90 "Options" => "Compression",
101 "Options" => "Compression"
|