sms_ntsc Change Log
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sms_ntsc 0.2.3
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- Moved configuration options to sms_ntsc_config.h, making it easier to
manage
- Greatly clarified and improved demo to read any uncompressed BMP image
and write filtered image when done
- Improved gamma to be properly applied to each RGB channel, and changed
default to compensate for difference between PC monitor and TV gamma
- Improved contrast to be properly applied to each RGB channel rather
than just luma
- Improved floating point calculations in library to be more stable and
not need double precision, which was causing problems with the sharpness
control on Windows when the DirectX libraries changed the FPU to single
precision mode
- Added extern "C" to header, allowing use in C++ without having to
rename the source file
- Made internal changes to factor out code common from all my NTSC
filter libraries, greatly simplifying things for me
sms_ntsc 0.2.2
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- Changed sms_ntsc_blit() again, this time to always take a pixel count
for input pitch (since the type is known) and a byte count for the
output pitch (since it can output at multiple depths now). I think I've
got the right interface this time. :)
- Improved default blitter to have selectable input and output pixel
formats
- Added parameters for resolution, color bleed, and artifacts
- Added presets for composite video, S-video, RGB, and monochrome
- Added SMS_NTSC_OUT_WIDTH() and SMS_NTSC_IN_WIDTH() for calculating
input/output widths
- Improved demo with more controls and interpolation and darkening of
scanlines rather than duplicating them
- Improved documentation
- Interface changes: sms_ntsc_blit() takes output pitch in bytes again.
Sorry for the multiple changes; I think I got it right this time. :)
- Removed: SMS_NTSC_CALC_WIDTH (use SMS_NTSC_OUT_WIDTH)
sms_ntsc 0.2.1
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- Added parameters for color fringing and edge artifacts
sms_ntsc 0.2.0
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- Changed sms_ntsc_blit() to take pixel counts instead of byte counts
for in_pitch and out_pitch, making it simpler to use. This requires that
current code be updated.
- Significantly improved NTSC signal processing to give clearer image
and better sharpness control
- Reduced scrolling shimmer and color artifacts to be closer to what
console generates
- Added gamma curve parameter to allow better matching of darker colors
on a TV
- Added ability to generate matching RGB palette for use in a normal
blitter
sms_ntsc 0.1.1
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- Changed sms_ntsc_blit() to accept 12-bit BGR pixels instead of palette
indicies and a separate palette.
- Improved sms_ntsc_blit() to accept any input width, allowing all the
different screen widths to be handled without complication. Use
SMS_NTSC_CALC_WIDTH() to find the output width for a given input width.
- Added toggling of left 8 column display to demo
sms_ntsc 0.1.0
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- First version
