| /external/webp/ |
| D | NEWS | 5 * major updates to the container and lossless bitstream docs (#448, #546,
12 * fix lossless crunch mode encoding with WEBP_REDUCE_SIZE
17 * security fix for lossless encoder (#565, chromium:1313709)
18 * improved progress granularity in WebPReportProgress() when using lossless
20 * many corrections to webp-lossless-bitstream-spec.txt (#551)
33 * minor lossless encoder improvements and x86 color conversion speed up
47 * lossless encoder improvements
70 * lossless encode/decode performance improvements
82 * lossless encoder speedups
84 * lossless multi-threaded security fix (chromium:917029)
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| D | ChangeLog | 12 e5fe2cfc webp-lossless-bitstream-spec,cosmetics: reflow paragraphs
13 0ceeeab9 webp-lossless-bitstream-spec: add amendment note
15 f853685e lossless: SUBTRACT_GREEN -> SUBTRACT_GREEN_TRANSFORM
16 786497e4 webp-lossless-bitstream-spec: fix inv color txfm description
17 c6ac672d webp-lossless-bitstream-spec: fix num_code_lengths check
18 b5700efb webp-lossless-bitstream-spec,cosmetics: grammar/capitalization
22 e3ba2b1f webp-lossless-bitstream-spec,cosmetics: reflow abstract
23 1e8e3ded webp-lossless-bitstream-spec: reword abstract re alpha
25 f6a4684b webp-lossless-bitstream-spec,cosmetics: normalize range syntax
26 54ebd5a3 webp-lossless-bitstream-spec: limit dist map lut to 69 cols
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| /external/webp/man/ |
| D | img2webp.1 | 31 lossless compression by default, but can be combined with \-q, \-m, \-lossy or
44 lossy or lossless compression for each frame heuristically. This global
45 option disables the local option \fB-lossy\fP and \fB-lossless\fP .
68 .B \-lossless, \-lossy
69 Compress the next image(s) using lossless or lossy compression mode. The
70 default mode is lossless.
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| D | cwebp.1 | 39 .B \-lossless
45 Specify the level of near\-lossless image preprocessing. This option adjusts
47 quality. It triggers lossless compression mode automatically. The range is 0
59 In case of lossless compression (specified by the \fB\-lossless\fP option), a
64 Switch on \fBlossless\fP compression mode with the specified level between 0
73 Lossless compression of alpha is achieved using a value of 100, while the lower
269 no compression, 1 uses WebP lossless format for compression. The default is 1.
306 cwebp \-q 50 -lossless picture.png \-o picture_lossless.webp
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| D | gif2webp.1 | 40 lossy or lossless compression for each frame heuristically.
46 In case of lossless compression (default), a small factor enables faster
66 uses lossless compression by default, but can be combined with \-q, \-m,
81 kmax = 17 for lossless compression and kmin = 3, kmax = 5 for lossy compression.
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| /external/webp/src/webp/ |
| D | encode.h | 63 // lossless manner. Files are usually larger than lossy format, but will
66 // settings. For lossless this means 'exact' is disabled. RGB values in
96 int lossless; // Lossless encoding (0=lossy(default), 1=lossless). member
98 // size and 100 the largest. For lossless, this
104 WebPImageHint image_hint; // Hint for image type (lossless only for now).
118 // 1 = compressed with WebP lossless). Default is 1.
121 int alpha_quality; // Between 0 (smallest size) and 100 (lossless).
141 int near_lossless; // Near lossless encoding [0 = max loss .. 100 = off
148 int use_delta_palette; // reserved for future lossless feature
172 // Note that the default values are lossless=0 and quality=75.
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| /external/libjpeg-turbo/ |
| D | jpegtran.1 | 3 jpegtran \- lossless transformation of JPEG files
28 ever fully decoding the image. Therefore, its transformations are lossless:
136 with this switch is not lossless. Also, the expected mathematical
162 This version of \fBjpegtran\fR also offers a lossless crop option, which
164 inside. Like the rotate and flip transforms, lossless crop is restricted by
176 point X,Y. The lossless crop feature discards data outside of a given image
178 transforms, lossless crop is restricted by the current JPEG format; the upper
192 A complementary lossless wipe option is provided to discard (gray out) data
207 A lossless drop option is also provided, which allows another JPEG image to be
224 Other not-strictly-lossless transformation switches are:
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| D | transupp.h | 49 * this is not strictly lossless, but it usually gives the best-looking
55 * We also offer a lossless-crop option, which discards data outside a given
57 * flip transforms, lossless crop is restricted by the JPEG format: the upper
65 * A complementary lossless wipe option is provided to discard (gray out) data
67 * A lossless drop option is also provided, which allows another JPEG image to
76 * We also provide a lossless-resize option, which is kind of a lossless-crop
86 * chrominance channels of a YCbCr image. This is lossless in the sense that
193 /* Determine whether lossless transformation is perfectly
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| D | rdjpgcom.c | 295 case M_SOF3: process = "Lossless"; break; in process_SOFn()
298 case M_SOF7: process = "Differential lossless"; break; in process_SOFn()
301 case M_SOF11: process = "Lossless, arithmetic coding"; break; in process_SOFn()
305 case M_SOF15: process = "Differential lossless, arithmetic coding"; break; in process_SOFn()
353 case M_SOF3: /* Lossless, Huffman */ in scan_JPEG_header()
356 case M_SOF7: /* Differential lossless, Huffman */ in scan_JPEG_header()
359 case M_SOF11: /* Lossless, arithmetic */ in scan_JPEG_header()
362 case M_SOF15: /* Differential lossless, arithmetic */ in scan_JPEG_header()
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| D | README.md | 50 generating planar YUV images and performing multiple simultaneous lossless
167 - **jpegtran: Lossless cropping**
171 - **jpegtran: Forcing width/height when performing lossless crop**
203 lossless format nor as a means of quality enhancement, and thus our primary
215 - **Lossless RGB JPEG files**<br>
223 lossless SmartScale encoding. Furthermore, there was actually no reason to
228 Our research (see link above) has shown that lossless SmartScale does not
230 existing, standard lossless formats. Therefore, at this time it is our belief
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| /external/webp/src/dec/ |
| D | vp8li_dec.h | 10 // Lossless decoder: internal header.
100 // Decodes image header for alpha data stored using lossless compression.
112 // Allocates and initialize a new lossless decoder instance.
118 // Decodes an image. It's required to decode the lossless header before calling
126 // Clears and deallocate a lossless decoder instance.
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| /external/flac/ |
| D | CONTRIBUTING.md | 29 - FLAC should be lossless. This seems obvious but lossy compression
31 should stay archival quality and be truly lossless for all input.
34 lossless codecs.
37 - FLAC should allow gapless playback of consecutive streams. This follows from the lossless goal.
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| /external/webp/examples/ |
| D | img2webp.c | 48 printf(" -mixed ............... use mixed lossy/lossless automatic mode\n"); in Help()
56 printf(" -lossless ........... use lossless mode (default)\n"); in Help()
186 config.lossless = 0; in main()
217 config.lossless = 1; in main()
223 if (!anim_config.allow_mixed) config.lossless = 0; in main()
224 } else if (!strcmp(argv[c], "-lossless")) { in main()
225 if (!anim_config.allow_mixed) config.lossless = 1; in main()
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| D | cwebp.c | 169 fprintf(stderr, "Lossless-%s compressed size: %d bytes\n", in PrintFullLosslessInfo()
174 fprintf(stderr, " * Lossless features used:"); in PrintFullLosslessInfo()
546 printf(" -z <int> ............... activates lossless preset with given\n" in HelpLong()
594 printf(" -lossless .............. encode image losslessly, default=off\n"); in HelpLong()
595 printf(" -near_lossless <int> ... use near-lossless image\n" in HelpLong()
765 } else if (!strcmp(argv[c], "-lossless")) { in main()
766 config.lossless = 1; in main()
769 config.lossless = 1; // use near-lossless only with lossless in main()
941 fprintf(stderr, "Invalid lossless preset (-z %d)\n", lossless_preset); in main()
946 // Check for unsupported command line options for lossless mode and log in main()
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| D | gif2webp.c | 72 " or lossless compression heuristically\n"); in Help()
76 " lossless compression by default; can be\n" in Help()
145 config.lossless = 1; // Use lossless compression by default. in main()
164 config.lossless = 0; in main()
167 config.lossless = 0; in main()
256 // Appropriate default kmin, kmax values for lossy and lossless. in main()
258 enc_options.kmin = config.lossless ? 9 : 3; in main()
261 enc_options.kmax = config.lossless ? 17 : 5; in main()
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| /external/libgav1/src/ |
| D | reconstruction.h | 36 TransformSize tx_size, bool lossless, Residual* buffer,
41 TransformSize tx_size, bool lossless,
47 TransformSize tx_size, bool lossless,
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| D | reconstruction.cc | 134 TransformSize tx_size, bool lossless, Residual* const buffer, in Reconstruct() argument
156 lossless ? dsp::kTransform1dWht : kRowTransform[tx_type]; in Reconstruct()
168 lossless ? dsp::kTransform1dWht : kColumnTransform[tx_type]; in Reconstruct()
179 TransformSize tx_size, bool lossless, int16_t* buffer,
184 TransformSize tx_size, bool lossless, int32_t* buffer,
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| /external/libaom/test/ |
| D | lossless_test.cc | 47 // alone will activate lossless in PreEncodeFrameHook()
74 << "Error: Base_qindex is non zero for lossless coding"; in HandleDecodeResult()
129 // lossless in TEST_P()
148 // lossless in TEST_P()
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| D | av1_encoder_parms_get_to_decoder.cc | 41 int32_t lossless; member
109 encoder->Control(AV1E_SET_LOSSLESS, encode_parms.lossless); in PreEncodeFrameHook()
131 if (encode_parms.lossless) { in PSNRPktHook()
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| D | monochrome_test.cc | 100 // Check average PSNR value is >= 100 db in case of lossless encoding. in PSNRPktHook()
200 ::testing::Values(0), // lossless
205 ::testing::Values(0, 1), // lossless
210 ::testing::Values(0), // lossless
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| /external/webp/doc/ |
| D | webp-container-spec.txt | 24 to compress image data in a lossy way, or (ii) the WebP lossless encoding
36 * **Lossless compression.** An image can be losslessly compressed, using the
37 WebP Lossless Format.
220 Simple File Format (Lossless)
223 **Note:** Older readers may not support files using the lossless format.
229 Simple WebP (lossless) file format:
257 [WebP Lossless Bitstream Format][webpllspec]. Note that the VP8L header
613 * `1`: Compressed using the WebP lossless format.
626 compression method is '0') or compressed using the lossless format
632 * Lossless format compression: the byte sequence is a compressed
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| D | tools.md | 18 You might want to try the `-lossless` flag too, which will compress the source
46 -z <int> ............... activates lossless preset with given
84 -lossless .............. encode image losslessly, default=off
85 -near_lossless <int> ... use near-lossless image
310 -mixed ............... use mixed lossy/lossless automatic mode
320 -lossless ........... use lossless mode (default)
349 or lossless compression heuristically
353 lossless compression by default; can be
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| D | specs_generation.md | 20 $ kramdown doc/webp-lossless-bitstream-spec.txt --template \
23 doc/output/webp-lossless-bitstream-spec.html
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| /external/libaom/av1/common/ |
| D | idct.c | 47 int lossless = txfm_param->lossless; in av1_highbd_inv_txfm_add_4x4_c() local
50 if (lossless) { in av1_highbd_inv_txfm_add_4x4_c()
205 txfm_param->lossless = xd->lossless[xd->mi[0]->segment_id]; in init_txfm_param()
261 // which is significant (not just an optimization) for the lossless in av1_highbd_inv_txfm_add_c()
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| /external/pigweed/pw_chrono/ |
| D | docs.rst | 159 `SystemClock::duration` either an :ref:`implicit<Implicit lossless conversions>`
181 // on implicit lossless conversions:
194 .. _Implicit lossless conversions:
196 Implicit lossless conversions
199 comes with built in implicit lossless conversion support which is evaluated at
205 If the implicit conversion cannot be guaranteed at compile time to be lossless
209 ``std::chrono::milliseconds`` in a lossless manner. However, you cannot
230 Although we recommend sticking to implicit lossless conversions, what if for
277 This code is lossless if the clock period is 1kHz and it's correct using a
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