Early edge predictions #74
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Co-authored-by: Ivan Siutsou <47280527+Melirius@users.noreply.github.com> Signed-off-by: Kristof Roomp <kristofr@gmail.com>
Initial Lepton implementation tests all the DC coefficients on the edges to be nonzero
mcroomp
reviewed
May 24, 2024
mcroomp
reviewed
May 24, 2024
mcroomp
reviewed
May 24, 2024
mcroomp
reviewed
May 24, 2024
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Merge the last changes and it looks like it's ready to checkin |
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Hi there, if you get a chance to merge with the master I can approve. Thanks! |
Today evening then :) |
mcroomp
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May 28, 2024
Melirius
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Jun 11, 2024
* use bitscan to shortcut zero searching * fastest so far * cleaned up code a bit * more optimizations * clarified changes * added comments * use aligned block as input * add unroll dependency * work in progress * work in progress * update cargo.lock * minor fixes * make envli 32 bit * update z in 16 increments to avoid extra shifts * working * remove bogus change * clean up envli * added comments= * add comments * improved comments for envli * update wide library * precalculate abs value * Update src/structs/jpeg_write.rs Co-authored-by: Ivan Siutsou <47280527+Melirius@users.noreply.github.com> Signed-off-by: Kristof Roomp <kristofr@gmail.com> * remove unused field in HuffCodes * Store length with code * Alternative VLI encoding * Cosmetics * Working early prediction - to clean * Cleared * Early edge prediction * Nonzero mask TODO: move raster update into decode_one_edge * Start of work on encoder * WIP: get rid of first transposition in IDCT * WIP: Nest step * No transposition in decoder * Code clear and formatting * More masks * Use transposed block all the way in decoding * Transposed nonzero mask in decoder * Simplified test * Working early prediction in encode, to clean * Code cleared, unused arrays removed * Shortened min_noise_threshold, more unified encoder/decoder code * Code clear * fill raster in at the same time as coordinate * missing updated cargo.lock since widen_mul was added later * RUSTy NeighborSummary * attempt 1 merge * remove extranious changes * remove extranious changes * removing extranious changes * removing extranious changes * removing extranious changes * removing extranious changes * removing extranious changes * avoid casting i32x8 using bytemuck if not strictly necessary as wide also provides typesafe casts * Some comments (by code review) * Comment elaboration * Typo fix * Unification of DC predictors calculations * fixed transpose * fixed mul * fix warnings * incorrect upcast of quantization table value * update dependencies and use from_u16x8 which is new in the wide crate * Revert "Merge remote-tracking branch 'MS/idctmul' into fasterjpeg_simd_variation" This reverts commit f2511d8, reversing changes made to 438a1a1. * Shorter FREQ_MAX * Correct checks of quantization tables Initial Lepton implementation tests all the DC coefficients on the edges to be nonzero * Formatting --------- Signed-off-by: Kristof Roomp <kristofr@gmail.com> Co-authored-by: Kristof <kristofr@gmail.com>
mcroomp
added a commit
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Jul 25, 2024
* use bitscan to shortcut zero searching * fastest so far * cleaned up code a bit * more optimizations * clarified changes * added comments * use aligned block as input * add unroll dependency * work in progress * work in progress * update cargo.lock * minor fixes * make envli 32 bit * update z in 16 increments to avoid extra shifts * working * remove bogus change * clean up envli * added comments= * add comments * improved comments for envli * update wide library * precalculate abs value * Update src/structs/jpeg_write.rs Co-authored-by: Ivan Siutsou <47280527+Melirius@users.noreply.github.com> Signed-off-by: Kristof Roomp <kristofr@gmail.com> * remove unused field in HuffCodes * Store length with code * Alternative VLI encoding * Cosmetics * Working early prediction - to clean * Cleared * Early edge prediction * Nonzero mask TODO: move raster update into decode_one_edge * Start of work on encoder * WIP: get rid of first transposition in IDCT * WIP: Nest step * No transposition in decoder * Code clear and formatting * More masks * Use transposed block all the way in decoding * Transposed nonzero mask in decoder * Simplified test * Working early prediction in encode, to clean * Code cleared, unused arrays removed * Shortened min_noise_threshold, more unified encoder/decoder code * Code clear * fill raster in at the same time as coordinate * missing updated cargo.lock since widen_mul was added later * RUSTy NeighborSummary * attempt 1 merge * remove extranious changes * remove extranious changes * removing extranious changes * removing extranious changes * removing extranious changes * removing extranious changes * removing extranious changes * avoid casting i32x8 using bytemuck if not strictly necessary as wide also provides typesafe casts * Some comments (by code review) * Comment elaboration * Typo fix * Unification of DC predictors calculations * fixed transpose * fixed mul * fix warnings * incorrect upcast of quantization table value * update dependencies and use from_u16x8 which is new in the wide crate * Revert "Merge remote-tracking branch 'MS/idctmul' into fasterjpeg_simd_variation" This reverts commit f2511d8, reversing changes made to 438a1a1. * Shorter FREQ_MAX * Correct checks of quantization tables Initial Lepton implementation tests all the DC coefficients on the edges to be nonzero * Formatting --------- Signed-off-by: Kristof Roomp <kristofr@gmail.com> Co-authored-by: Kristof <kristofr@gmail.com>
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Closes #70
DCT coefficients are stored now in transposed raster order that is more suitable for IDCT (one transposition is excluded). Edge coefficients predictions are produced along with edge DCT coefficients. Overall performance gain on my machine (Zen3, x5950) is ~1.5 %.