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52 Commits

Author SHA1 Message Date
marqs daf9ec1611 optimize line3x timing 2020-06-14 20:07:24 +03:00
Russell Harmon bab85e713b Increase max V. Backporch value from 63 to 236 
This change allows highly letterboxed content (e.g. the PSP's 480x272
picture in a 720x480 frame) to be "zoomed" to a full screen picture by
treating the letterbox as horizontal and vertical backporch.

Co-authored-by: Chris Lockfort <clockfort@gmail.com>
 2020-04-07 12:51:36 -07:00
marqs 85c295c5e2 make pll_reconfig more robust 2019-10-12 22:56:10 +03:00
marqs 9feb96888b fix PLL reference clock switchover logic 2019-10-09 23:58:55 +03:00
marqs ba4614a4f8 correct even/odd field naming 2019-10-08 01:07:25 +03:00
marqs b22365af20 add timeout to pll_reconfig and update postprocess pipeline diagram 2019-10-07 23:20:44 +03:00
marqs 3a12592c53 fix linebuf read address timing bottleneck 2019-10-07 01:25:33 +03:00
marqs 9d496383c3 optimize clock network 
* replace all clock muxes with a single cycloneive_clkctrl to minimize skew
* use a single dynamically configured PLL to comply with cycloneive_clkctrl
 2019-10-06 23:54:32 +03:00
marqs 6266976114 first OSD implementation 2019-10-03 02:03:43 +03:00
marqs aa43991534 add mask color option 2019-09-30 19:31:05 +03:00
marqs 5e0277fb48 add Panasonic hack for improving line count tolerance with line2x 2019-07-01 19:15:57 +03:00
marqs 9e81fb5922 Scanline updates and fixes 
* Enable overlay pattern customization
* Fix non-alternating mode with line4x interlace sources
* Add alternate interval option for pre-linedoubled sources
 2019-03-23 00:09:46 +02:00
paulb-nl f276cda190 Add support for GBI 360p 2018-10-13 17:33:10 +02:00
marqs 22e49300df fix line2x reverse LPF trigger 2018-04-18 23:14:24 +03:00
marqs 70ab55c1fa fix optimized mode mask & position offsets 2018-04-15 23:41:26 +03:00
marqs 37650ca22b misc improvements 
* add character LCD backlight timeout option
* increase h.mask range
* show accurate (fpga-calculated) timings on infoscreen
 2018-03-28 20:09:40 +03:00
marqs 9ad696dbc3 optimize away one pp stage and unify code formatting 2018-03-12 01:25:23 +02:00
borti4938 852054cdd0 finer granulated steps for hybrid sl settings 2018-03-07 10:21:18 +01:00
borti4938 985aeb1a93 use explicite ramstyle for post-processing pipeline to keep registers in logic (as suggested in pull-request #21 comments) 2018-03-07 09:45:27 +01:00
borti4938 45ca4e9268 undo changes as suggested in pull-request #21 comments 2018-03-07 09:43:37 +01:00
borti4938 0828addc83 Merge branch 'release' of https://github.com/marqs85/ossc into upstream 2018-03-07 08:29:49 +01:00
marqs 0ab31b30b4 simplify timing constraints 2018-03-07 09:21:19 +02:00
borti4938 209130b167 misc updates: 
- integrate mask and border generation more deeply into the post processing chain
- delay RLPF by one PP stage (reduce logic length after large mux)
- synthesise a registers after several adder logics
 2018-03-06 13:08:20 +01:00
borti4938 670f515141 various post processing pipeline updates: 
- increase number of pipeline stages for scanline generation
- alternative hybrid strength implementation
- add missing file declaration in qsf
 2018-03-06 09:36:21 +01:00
borti4938 b10d7f3762 SL Multiplication: 
- Hybrid value based on Y (Y calculated according to YCoCg appr.)
- Use 8bit input as p-factor
 2018-03-06 09:34:12 +01:00
borti4938 0b51fd7758 - resolve conflicts from merge 
- use hybrid contrast for both sl generation methods: multiplication and linear
 2018-03-06 09:32:02 +01:00
borti4938 1a405c1e2e Merge branch 'scanline_contrast' of https://github.com/paulb-nl/ossc into upstream 
# Conflicts:
#	rtl/scanconverter.v
#	software/sys_controller/ossc/av_controller.c
 2018-03-06 09:30:22 +01:00
paulb-nl 990bc1563e Add Scanline contrast 
Reduce scanline strength for bright pixels
 2018-02-24 21:56:18 +01:00
borti4938 500a22f316 small simplification on reverse lpf implementation 2018-02-22 13:45:19 +01:00
borti4938 5249d313d8 scanlines generation via multiplication 2018-02-22 08:11:26 +01:00
marqs a24d6b0e3a Update latency tester 
* Enable operation with all sources
* Measure strobe length on low-persistence displays
 2017-10-28 12:10:54 +03:00
marqs 817012e23e Fix Line2x RLPF trigger position 2017-10-22 22:32:13 +03:00
marqs 4b21a354b4 Fix and optimize reverse lpf activation 2017-10-12 02:31:19 +03:00
paulb-nl ac16008076 Add reverse LPF feature 
reverse LPF can be used to mostly reverse the blur on pre 1-CHIP SNES.
For best results use 256x240 optimized mode.
 2017-09-27 22:43:26 +02:00
marqs 9d14cc776e Misc small fixes and improvements 
* Disable 480p scanlines in auto mode
* Remove inoperable 3x/4x processing modes from 1080i list
* Add 640x512 mode to 480p group and limit 480p sampler option to 525-line modes
* Fix occasional pixel repetion issue after HDMI<->DVI TX switch
* Add "Allow upsample2x" option
* Add comments to some unclear sections
 2017-08-10 00:06:35 +03:00
marqs 2aee3294e3 Fix HDTV mode parameters 2017-05-30 21:16:03 +03:00
marqs 2577470abe Clean up TX setup code and add compatibility options 2017-05-29 20:43:24 +03:00
marqs 4f36278cb7 Sync processing rewritten and some issues fixed 
* add 480i/576i line3x/4x
* clean up RTL and SDC
* update AVI infoframe properly
* add HDMI IT content option
 2017-05-18 23:36:37 +03:00
marqs 01b5fe20ee Sync and masking improvements 
* detect VSM=1 properly
* increase mask brightness
* add L2 optimized modes
* fix internal vsync alignment
 2017-05-18 23:36:37 +03:00
marqs 2c934c9dd0 Fix line3x 4:3 mode and VGA interlace detection 2017-02-09 23:14:24 +02:00
marqs 6e043ef577 Improve input mode handling 
* New options and better compatibility for Line5x
* Add support for 960i and 1080i
* Make TVP HPLL2x option user-selectable
 2017-02-07 23:04:30 +02:00
marqs 3b19b2843c Preliminary Line5x implementation 2017-01-29 13:02:12 +02:00
marqs d41c7522a0 Misc updates 
* Fix mask placement and make its brightness adjustable
* Line4x
 2017-01-24 00:18:15 +02:00
marqs 434186d64e Improve lo-res mode processing features 
* workaround for phase shift issue on optimized modes
* add hscale option for 256x240 opt Line3x mode
* distribute video modes to groups and allow passthru for all modes
 2017-01-23 00:56:17 +02:00
marqs d77c293b70 * Clean up some FPGA code 
* Wrap sampling phase setting
* Enable hal.enable_lightweight_device_driver_api to reduce CPU code size
 2016-12-31 14:18:21 +02:00
marqs 79f215d41e Minor fixes. 2016-12-27 11:16:08 +02:00
marqs 827df7930f * L3 optimized mode scanlines fixed 
* Advanced timing tweaker implemented
 2016-08-16 22:45:23 +03:00
marqs a488422089 * Fix scanline rendering issues 
* Add initial input and SDTV sync glitch filter settings
* Modify input initialization logic
* Fix debug build warnings
 2016-08-14 18:57:50 +03:00
marqs c8b542b917 * 480p/576p line2x 
* 480i/576i passthrough
* alternating scanlines for interlaced material
 2016-07-09 23:12:35 +03:00
marqs c83653c880 Release 0.69 
* Improved remote control handling code
* Fixed occasional mode change loop when switching to a non-interlace mode utilizing odd-field sync signal
* Fixed randomly missing blue channel at power-on when using DVI output mode
* Added H-PLL coast options
* Finer tuning range for scanline strength and mask
 2016-04-15 22:05:53 +03:00