618 lines
28 KiB
C++
618 lines
28 KiB
C++
#pragma once
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/// @file pixel_controller.h
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/// Low level pixel data writing class
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// Note that new code should use the PixelIterator concrete object to write out
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// led data.
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// Using this class deep in driver code is deprecated because it's templates will
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// infact everything it touches. PixelIterator is concrete and doesn't have these
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// problems. See PixelController::as_iterator() for how to create a PixelIterator.
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#include "lib8tion/intmap.h"
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#include "rgbw.h"
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#include "fl/five_bit_hd_gamma.h"
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#include "fl/force_inline.h"
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#include "lib8tion/scale8.h"
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#include "fl/namespace.h"
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#include "eorder.h"
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#include "dither_mode.h"
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#include "pixel_iterator.h"
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#include "crgb.h"
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#include "fl/compiler_control.h"
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#include "FastLED.h" // Problematic.
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FL_DISABLE_WARNING_PUSH
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FL_DISABLE_WARNING_SIGN_CONVERSION
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FL_DISABLE_WARNING_IMPLICIT_INT_CONVERSION
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FL_DISABLE_WARNING_FLOAT_CONVERSION
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FASTLED_NAMESPACE_BEGIN
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/// Gets the assigned color channel for a byte's position in the output,
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/// using the color order (EOrder) template parameter from the
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/// LED controller
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/// @param X the byte's position in the output (0-2)
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/// @returns the color channel for that byte (0 = red, 1 = green, 2 = blue)
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/// @see EOrder
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#define RO(X) RGB_BYTE(RGB_ORDER, X)
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/// Gets the assigned color channel for a byte's position in the output,
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/// using a passed RGB color order
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/// @param RO the RGB color order
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/// @param X the byte's position in the output (0-2)
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/// @returns the color channel for that byte (0 = red, 1 = green, 2 = blue)
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/// @see EOrder
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#define RGB_BYTE(RO,X) (((RO)>>(3*(2-(X)))) & 0x3)
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/// Gets the color channel for byte 0.
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/// @see RGB_BYTE(RO,X)
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#define RGB_BYTE0(RO) ((RO>>6) & 0x3)
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/// Gets the color channel for byte 1.
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/// @see RGB_BYTE(RO,X)
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#define RGB_BYTE1(RO) ((RO>>3) & 0x3)
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/// Gets the color channel for byte 2.
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/// @see RGB_BYTE(RO,X)
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#define RGB_BYTE2(RO) ((RO) & 0x3)
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// operator byte *(struct CRGB[] arr) { return (byte*)arr; }
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struct ColorAdjustment {
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CRGB premixed; /// the per-channel scale values premixed with brightness.
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#if FASTLED_HD_COLOR_MIXING
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CRGB color; /// the per-channel scale values assuming full brightness.
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uint8_t brightness; /// the global brightness value
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#endif
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};
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/// Pixel controller class. This is the class that we use to centralize pixel access in a block of data, including
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/// support for things like RGB reordering, scaling, dithering, skipping (for ARGB data), and eventually, we will
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/// centralize 8/12/16 conversions here as well.
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/// @tparam RGB_ORDER the rgb ordering for the LEDs (e.g. what order red, green, and blue data is written out in)
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/// @tparam LANES how many parallel lanes of output to write
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/// @tparam MASK bitmask for the output lanes
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template<EOrder RGB_ORDER, int LANES=1, uint32_t MASK=0xFFFFFFFF>
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struct PixelController {
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const uint8_t *mData; ///< pointer to the underlying LED data
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int mLen; ///< number of LEDs in the data for one lane
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int mLenRemaining; ///< counter for the number of LEDs left to process
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uint8_t d[3]; ///< values for the scaled dither signal @see init_binary_dithering()
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uint8_t e[3]; ///< values for the unscaled dither signal @see init_binary_dithering()
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int8_t mAdvance; ///< how many bytes to advance the pointer by each time. For CRGB this is 3.
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int mOffsets[LANES]; ///< the number of bytes to offset each lane from the starting pointer @see initOffsets()
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ColorAdjustment mColorAdjustment;
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enum {
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kLanes = LANES,
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kMask = MASK
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};
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FASTLED_FORCE_INLINE fl::PixelIterator as_iterator(const Rgbw& rgbw) {
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return fl::PixelIterator(this, rgbw);
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}
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void disableColorAdjustment() {
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#if FASTLED_HD_COLOR_MIXING
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mColorAdjustment.premixed = CRGB(mColorAdjustment.brightness, mColorAdjustment.brightness, mColorAdjustment.brightness);
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mColorAdjustment.color = CRGB(0xff, 0xff, 0xff);
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#endif
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}
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/// Copy constructor
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/// @param other the object to copy
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PixelController(const PixelController & other) {
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copy(other);
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}
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template<EOrder RGB_ORDER_OTHER>
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PixelController(const PixelController<RGB_ORDER_OTHER, LANES, MASK> & other) {
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copy(other);
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}
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template<typename PixelControllerT>
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void copy(const PixelControllerT& other) {
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static_assert(int(kLanes) == int(PixelControllerT::kLanes), "PixelController lanes must match or mOffsets will be wrong");
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static_assert(int(kMask) == int(PixelControllerT::kMask), "PixelController mask must match or else one or the other controls different lanes");
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d[0] = other.d[0];
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d[1] = other.d[1];
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d[2] = other.d[2];
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e[0] = other.e[0];
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e[1] = other.e[1];
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e[2] = other.e[2];
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mData = other.mData;
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mColorAdjustment = other.mColorAdjustment;
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mAdvance = other.mAdvance;
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mLenRemaining = mLen = other.mLen;
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for(int i = 0; i < LANES; ++i) { mOffsets[i] = other.mOffsets[i]; }
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}
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/// Initialize the PixelController::mOffsets array based on the length of the strip
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/// @param len the number of LEDs in one lane of the strip
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void initOffsets(int len) {
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int nOffset = 0;
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for(int i = 0; i < LANES; ++i) {
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mOffsets[i] = nOffset;
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if((1<<i) & MASK) { nOffset += (len * mAdvance); }
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}
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}
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/// Constructor
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/// @param d pointer to LED data
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/// @param len length of the LED data
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/// @param color_adjustment LED scale values
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/// @param dither dither setting for the LEDs
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/// @param advance whether the pointer (d) should advance per LED
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/// @param skip if the pointer is advancing, how many bytes to skip in addition to 3
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PixelController(
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const uint8_t *d, int len, ColorAdjustment color_adjustment,
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EDitherMode dither, bool advance, uint8_t skip)
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: mData(d), mLen(len), mLenRemaining(len), mColorAdjustment(color_adjustment) {
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enable_dithering(dither);
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mData += skip;
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mAdvance = (advance) ? 3+skip : 0;
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initOffsets(len);
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}
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/// Constructor
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/// @param d pointer to LED data
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/// @param len length of the LED data
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/// @param color_adjustment LED scale values
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/// @param dither dither setting for the LEDs
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PixelController(
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const CRGB *d, int len, ColorAdjustment color_adjustment,
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EDitherMode dither)
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: mData((const uint8_t*)d), mLen(len), mLenRemaining(len), mColorAdjustment(color_adjustment) {
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enable_dithering(dither);
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mAdvance = 3;
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initOffsets(len);
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}
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/// Constructor
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/// @param d pointer to LED data
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/// @param len length of the LED data
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/// @param color_adjustment LED scale values
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/// @param dither dither setting for the LEDs
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PixelController(
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const CRGB &d, int len, ColorAdjustment color_adjustment, EDitherMode dither)
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: mData((const uint8_t*)&d), mLen(len), mLenRemaining(len), mColorAdjustment(color_adjustment) {
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enable_dithering(dither);
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mAdvance = 0;
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initOffsets(len);
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}
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#if FASTLED_HD_COLOR_MIXING
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uint8_t global_brightness() const {
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return mColorAdjustment.brightness;
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}
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#endif
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#if !defined(NO_DITHERING) || (NO_DITHERING != 1)
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/// Predicted max update rate, in Hertz
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#define MAX_LIKELY_UPDATE_RATE_HZ 400
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/// Minimum acceptable dithering rate, in Hertz
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#define MIN_ACCEPTABLE_DITHER_RATE_HZ 50
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/// The number of updates in a single dither cycle
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#define UPDATES_PER_FULL_DITHER_CYCLE (MAX_LIKELY_UPDATE_RATE_HZ / MIN_ACCEPTABLE_DITHER_RATE_HZ)
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/// Set "virtual bits" of dithering to the highest level
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/// that is not likely to cause excessive flickering at
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/// low brightness levels + low update rates.
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/// These pre-set values are a little ambitious, since
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/// a 400Hz update rate for WS2811-family LEDs is only
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/// possible with 85 pixels or fewer.
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/// Once we have a "number of milliseconds since last update"
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/// value available here, we can quickly calculate the correct
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/// number of "virtual bits" on the fly with a couple of "if"
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/// statements -- no division required. At this point,
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/// the division is done at compile time, so there's no runtime
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/// cost, but the values are still hard-coded.
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/// @todo Can these macros be replaced with constants scoped to PixelController::init_binary_dithering()?
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#define RECOMMENDED_VIRTUAL_BITS ((UPDATES_PER_FULL_DITHER_CYCLE>1) + \
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(UPDATES_PER_FULL_DITHER_CYCLE>2) + \
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(UPDATES_PER_FULL_DITHER_CYCLE>4) + \
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(UPDATES_PER_FULL_DITHER_CYCLE>8) + \
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(UPDATES_PER_FULL_DITHER_CYCLE>16) + \
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(UPDATES_PER_FULL_DITHER_CYCLE>32) + \
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(UPDATES_PER_FULL_DITHER_CYCLE>64) + \
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(UPDATES_PER_FULL_DITHER_CYCLE>128) )
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/// Alias for RECOMMENDED_VIRTUAL_BITS
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#define VIRTUAL_BITS RECOMMENDED_VIRTUAL_BITS
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#endif
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/// Set up the values for binary dithering
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void init_binary_dithering() {
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#if !defined(NO_DITHERING) || (NO_DITHERING != 1)
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// R is the digther signal 'counter'.
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static uint8_t R = 0;
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++R;
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// R is wrapped around at 2^ditherBits,
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// so if ditherBits is 2, R will cycle through (0,1,2,3)
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uint8_t ditherBits = VIRTUAL_BITS;
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R &= (0x01 << ditherBits) - 1;
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// Q is the "unscaled dither signal" itself.
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// It's initialized to the reversed bits of R.
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// If 'ditherBits' is 2, Q here will cycle through (0,128,64,192)
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uint8_t Q = 0;
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// Reverse bits in a byte
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{
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if(R & 0x01) { Q |= 0x80; }
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if(R & 0x02) { Q |= 0x40; }
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if(R & 0x04) { Q |= 0x20; }
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if(R & 0x08) { Q |= 0x10; }
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if(R & 0x10) { Q |= 0x08; }
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if(R & 0x20) { Q |= 0x04; }
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if(R & 0x40) { Q |= 0x02; }
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if(R & 0x80) { Q |= 0x01; }
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}
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// Now we adjust Q to fall in the center of each range,
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// instead of at the start of the range.
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// If ditherBits is 2, Q will be (0, 128, 64, 192) at first,
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// and this adjustment makes it (31, 159, 95, 223).
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if( ditherBits < 8) {
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Q += 0x01 << (7 - ditherBits);
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}
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// D and E form the "scaled dither signal"
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// which is added to pixel values to affect the
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// actual dithering.
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// Setup the initial D and E values
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for(int i = 0; i < 3; ++i) {
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uint8_t s = mColorAdjustment.premixed.raw[i];
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e[i] = s ? (256/s) + 1 : 0;
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d[i] = scale8(Q, e[i]);
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#if (FASTLED_SCALE8_FIXED == 1)
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if(d[i]) (--d[i]);
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#endif
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if(e[i]) --e[i];
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}
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#endif
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}
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/// Do we have n pixels left to process?
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/// @param n the number to check against
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/// @returns 'true' if there are more than n pixels left to process
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FASTLED_FORCE_INLINE bool has(int n) {
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return mLenRemaining >= n;
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}
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/// Toggle dithering enable
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/// If dithering is set to enabled, this will re-init the dithering values
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/// (init_binary_dithering()). Otherwise it will clear the stored dithering
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/// data.
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/// @param dither the dither setting
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void enable_dithering(EDitherMode dither) {
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switch(dither) {
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case BINARY_DITHER: init_binary_dithering(); break;
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default: d[0]=d[1]=d[2]=e[0]=e[1]=e[2]=0; break;
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}
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}
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/// Get the length of the LED strip
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/// @returns PixelController::mLen
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FASTLED_FORCE_INLINE int size() { return mLen; }
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/// Get the number of lanes of the Controller
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/// @returns LANES from template
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FASTLED_FORCE_INLINE int lanes() { return LANES; }
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/// Get the amount to advance the pointer by
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/// @returns PixelController::mAdvance
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FASTLED_FORCE_INLINE int advanceBy() { return mAdvance; }
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/// Advance the data pointer forward, adjust position counter
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FASTLED_FORCE_INLINE void advanceData() { mData += mAdvance; --mLenRemaining;}
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/// Step the dithering forward
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/// @note If updating here, be sure to update the asm version in clockless_trinket.h!
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FASTLED_FORCE_INLINE void stepDithering() {
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// IF UPDATING HERE, BE SURE TO UPDATE THE ASM VERSION IN
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// clockless_trinket.h!
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d[0] = e[0] - d[0];
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d[1] = e[1] - d[1];
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d[2] = e[2] - d[2];
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}
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/// Some chipsets pre-cycle the first byte, which means we want to cycle byte 0's dithering separately
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FASTLED_FORCE_INLINE void preStepFirstByteDithering() {
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d[RO(0)] = e[RO(0)] - d[RO(0)];
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}
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/// @name Template'd static functions for output
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/// These functions are used for retrieving LED data for the LED chipset output controllers.
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/// @{
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/// Read a byte of LED data
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/// @tparam SLOT The data slot in the output stream. This is used to select which byte of the output stream is being processed.
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/// @param pc reference to the pixel controller
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t loadByte(PixelController & pc) { return pc.mData[RO(SLOT)]; }
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/// Read a byte of LED data for parallel output
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/// @tparam SLOT The data slot in the output stream. This is used to select which byte of the output stream is being processed.
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/// @param pc reference to the pixel controller
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/// @param lane the parallel output lane to read the byte for
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t loadByte(PixelController & pc, int lane) { return pc.mData[pc.mOffsets[lane] + RO(SLOT)]; }
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/// Calculate a dither value using the per-channel dither data
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/// @tparam SLOT The data slot in the output stream. This is used to select which byte of the output stream is being processed.
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/// @param pc reference to the pixel controller
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/// @param b the color byte to dither
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/// @see PixelController::d
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t dither(PixelController & pc, uint8_t b) { return b ? qadd8(b, pc.d[RO(SLOT)]) : 0; }
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/// Calculate a dither value
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/// @tparam SLOT The data slot in the output stream. This is used to select which byte of the output stream is being processed.
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/// @param b the color byte to dither
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/// @param d dither data
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t dither(PixelController & , uint8_t b, uint8_t d) { return b ? qadd8(b,d) : 0; }
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/// Scale a value using the per-channel scale data
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/// @tparam SLOT The data slot in the output stream. This is used to select which byte of the output stream is being processed.
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/// @param pc reference to the pixel controller
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/// @param b the color byte to scale
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/// @see PixelController::mScale
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t scale(PixelController & pc, uint8_t b) { return scale8(b, pc.mColorAdjustment.premixed.raw[RO(SLOT)]); }
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/// Scale a value
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/// @tparam SLOT The data slot in the output stream. This is used to select which byte of the output stream is being processed.
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/// @param b the byte to scale
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/// @param scale the scale value
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t scale(PixelController & , uint8_t b, uint8_t scale) { return scale8(b, scale); }
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/// @name Composite shortcut functions for loading, dithering, and scaling
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/// These composite functions will load color data, dither it, and scale it
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/// all at once so that it's ready for the output controller to send to the
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/// LEDs.
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/// @{
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/// Loads, dithers, and scales a single byte for a given output slot, using class dither and scale values
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/// @tparam SLOT The data slot in the output stream. This is used to select which byte of the output stream is being processed.
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/// @param pc reference to the pixel controller
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t loadAndScale(PixelController & pc) { return scale<SLOT>(pc, pc.dither<SLOT>(pc, pc.loadByte<SLOT>(pc))); }
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/// Loads, dithers, and scales a single byte for a given output slot and lane, using class dither and scale values
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/// @tparam SLOT The data slot in the output stream. This is used to select which byte of the output stream is being processed.
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/// @param pc reference to the pixel controller
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/// @param lane the parallel output lane to read the byte for
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t loadAndScale(PixelController & pc, int lane) { return scale<SLOT>(pc, pc.dither<SLOT>(pc, pc.loadByte<SLOT>(pc, lane))); }
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/// Loads, dithers, and scales a single byte for a given output slot and lane
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/// @tparam SLOT The data slot in the output stream. This is used to select which byte of the output stream is being processed.
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/// @param pc reference to the pixel controller
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/// @param lane the parallel output lane to read the byte for
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/// @param d the dither data for the byte
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/// @param scale the scale data for the byte
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t loadAndScale(PixelController & pc, int lane, uint8_t d, uint8_t scale) { return scale8(pc.dither<SLOT>(pc, pc.loadByte<SLOT>(pc, lane), d), scale); }
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/// Loads and scales a single byte for a given output slot and lane
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/// @tparam SLOT The data slot in the output stream. This is used to select which byte of the output stream is being processed.
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/// @param pc reference to the pixel controller
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/// @param lane the parallel output lane to read the byte for
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/// @param scale the scale data for the byte
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t loadAndScale(PixelController & pc, int lane, uint8_t scale) { return scale8(pc.loadByte<SLOT>(pc, lane), scale); }
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/// A version of loadAndScale() that advances the output data pointer
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/// @param pc reference to the pixel controller
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t advanceAndLoadAndScale(PixelController & pc) { pc.advanceData(); return pc.loadAndScale<SLOT>(pc); }
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/// A version of loadAndScale() that advances the output data pointer
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/// @param pc reference to the pixel controller
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/// @param lane the parallel output lane to read the byte for
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t advanceAndLoadAndScale(PixelController & pc, int lane) { pc.advanceData(); return pc.loadAndScale<SLOT>(pc, lane); }
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/// A version of loadAndScale() that advances the output data pointer without dithering
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/// @param pc reference to the pixel controller
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/// @param lane the parallel output lane to read the byte for
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/// @param scale the scale data for the byte
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t advanceAndLoadAndScale(PixelController & pc, int lane, uint8_t scale) { pc.advanceData(); return pc.loadAndScale<SLOT>(pc, lane, scale); }
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/// @} Composite shortcut functions
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/// @name Data retrieval functions
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/// These functions retrieve channel-specific data from the class,
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/// arranged in output order.
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/// @{
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/// Gets the dithering data for the provided output slot
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/// @tparam SLOT The data slot in the output stream. This is used to select which byte of the output stream is being processed.
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/// @param pc reference to the pixel controller
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/// @returns dithering data for the given channel
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/// @see PixelController::d
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t getd(PixelController & pc) { return pc.d[RO(SLOT)]; }
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/// Gets the scale data for the provided output slot
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/// @tparam SLOT The data slot in the output stream. This is used to select which byte of the output stream is being processed.
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/// @param pc reference to the pixel controller
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/// @returns scale data for the given channel
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/// @see PixelController::mScale
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t getscale(PixelController & pc) { return pc.mColorAdjustment.premixed.raw[RO(SLOT)]; }
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/// @} Data retrieval functions
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/// @} Template'd static functions for output
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// Helper functions to get around gcc stupidities
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FASTLED_FORCE_INLINE uint8_t loadAndScale0(int lane, uint8_t scale) { return loadAndScale<0>(*this, lane, scale); } ///< non-template alias of loadAndScale<0>()
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FASTLED_FORCE_INLINE uint8_t loadAndScale1(int lane, uint8_t scale) { return loadAndScale<1>(*this, lane, scale); } ///< non-template alias of loadAndScale<1>()
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FASTLED_FORCE_INLINE uint8_t loadAndScale2(int lane, uint8_t scale) { return loadAndScale<2>(*this, lane, scale); } ///< non-template alias of loadAndScale<2>()
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FASTLED_FORCE_INLINE uint8_t advanceAndLoadAndScale0(int lane, uint8_t scale) { return advanceAndLoadAndScale<0>(*this, lane, scale); } ///< non-template alias of advanceAndLoadAndScale<0>()
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FASTLED_FORCE_INLINE uint8_t stepAdvanceAndLoadAndScale0(int lane, uint8_t scale) { stepDithering(); return advanceAndLoadAndScale<0>(*this, lane, scale); } ///< stepDithering() and advanceAndLoadAndScale0()
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FASTLED_FORCE_INLINE uint8_t loadAndScale0(int lane) { return loadAndScale<0>(*this, lane); } ///< @copydoc loadAndScale0(int, uint8_t)
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FASTLED_FORCE_INLINE uint8_t loadAndScale1(int lane) { return loadAndScale<1>(*this, lane); } ///< @copydoc loadAndScale1(int, uint8_t)
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FASTLED_FORCE_INLINE uint8_t loadAndScale2(int lane) { return loadAndScale<2>(*this, lane); } ///< @copydoc loadAndScale2(int, uint8_t)
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FASTLED_FORCE_INLINE uint8_t advanceAndLoadAndScale0(int lane) { return advanceAndLoadAndScale<0>(*this, lane); } ///< @copydoc advanceAndLoadAndScale0(int, uint8_t)
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FASTLED_FORCE_INLINE uint8_t stepAdvanceAndLoadAndScale0(int lane) { stepDithering(); return advanceAndLoadAndScale<0>(*this, lane); } ///< @copydoc stepAdvanceAndLoadAndScale0(int, uint8_t)
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// LoadAndScale0 loads the pixel data in the order specified by RGB_ORDER and then scales it by the color correction values
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// For example in color order GRB, loadAndScale0() will return the green channel scaled by the color correction value for green.
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FASTLED_FORCE_INLINE uint8_t loadAndScale0() { return loadAndScale<0>(*this); } ///< @copydoc loadAndScale0(int, uint8_t)
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FASTLED_FORCE_INLINE uint8_t loadAndScale1() { return loadAndScale<1>(*this); } ///< @copydoc loadAndScale1(int, uint8_t)
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FASTLED_FORCE_INLINE uint8_t loadAndScale2() { return loadAndScale<2>(*this); } ///< @copydoc loadAndScale2(int, uint8_t)
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FASTLED_FORCE_INLINE uint8_t advanceAndLoadAndScale0() { return advanceAndLoadAndScale<0>(*this); } ///< @copydoc advanceAndLoadAndScale0(int, uint8_t)
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FASTLED_FORCE_INLINE uint8_t stepAdvanceAndLoadAndScale0() { stepDithering(); return advanceAndLoadAndScale<0>(*this); } ///< @copydoc stepAdvanceAndLoadAndScale0(int, uint8_t)
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FASTLED_FORCE_INLINE uint8_t getScale0() { return getscale<0>(*this); } ///< non-template alias of getscale<0>()
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FASTLED_FORCE_INLINE uint8_t getScale1() { return getscale<1>(*this); } ///< non-template alias of getscale<1>()
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FASTLED_FORCE_INLINE uint8_t getScale2() { return getscale<2>(*this); } ///< non-template alias of getscale<2>()
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#if FASTLED_HD_COLOR_MIXING
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template<int SLOT> FASTLED_FORCE_INLINE static uint8_t getScaleFullBrightness(PixelController & pc) { return pc.mColorAdjustment.color.raw[RO(SLOT)]; }
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// Gets the color corection and also the brightness as seperate values.
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// This is needed for the higher precision chipsets like the APA102.
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FASTLED_FORCE_INLINE void getHdScale(uint8_t* c0, uint8_t* c1, uint8_t* c2, uint8_t* brightness) {
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*c0 = getScaleFullBrightness<0>(*this);
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*c1 = getScaleFullBrightness<1>(*this);
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*c2 = getScaleFullBrightness<2>(*this);
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*brightness = mColorAdjustment.brightness;
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}
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#endif
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FASTLED_FORCE_INLINE void loadAndScale_APA102_HD(uint8_t *b0_out, uint8_t *b1_out,
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uint8_t *b2_out,
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uint8_t *brightness_out) {
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CRGB rgb = CRGB(mData[0], mData[1], mData[2]);
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uint8_t brightness = 0;
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if (rgb) {
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#if FASTLED_HD_COLOR_MIXING
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brightness = mColorAdjustment.brightness;
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CRGB scale = mColorAdjustment.color;
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#else
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brightness = 255;
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CRGB scale = mColorAdjustment.premixed;
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#endif
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fl::five_bit_hd_gamma_bitshift(
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rgb,
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scale,
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brightness,
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&rgb,
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&brightness);
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}
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const uint8_t b0_index = RGB_BYTE0(RGB_ORDER);
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const uint8_t b1_index = RGB_BYTE1(RGB_ORDER);
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const uint8_t b2_index = RGB_BYTE2(RGB_ORDER);
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*b0_out = rgb.raw[b0_index];
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*b1_out = rgb.raw[b1_index];
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*b2_out = rgb.raw[b2_index];
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*brightness_out = brightness;
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}
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FASTLED_FORCE_INLINE void loadAndScaleRGB(uint8_t *b0_out, uint8_t *b1_out,
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uint8_t *b2_out) {
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*b0_out = loadAndScale0();
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*b1_out = loadAndScale1();
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*b2_out = loadAndScale2();
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}
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// WS2816B has native 16 bit/channel color and internal 4 bit gamma correction.
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// So we don't do gamma here, and we don't bother with dithering.
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FASTLED_FORCE_INLINE void loadAndScale_WS2816_HD(uint16_t *s0_out, uint16_t *s1_out, uint16_t *s2_out) {
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// Note that the WS2816 has a 4 bit gamma correction built in. To improve things this algorithm may
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// change in the future with a partial gamma correction that is completed by the chipset gamma
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// correction.
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uint16_t r16 = map8_to_16(mData[0]);
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uint16_t g16 = map8_to_16(mData[1]);
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uint16_t b16 = map8_to_16(mData[2]);
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if (r16 || g16 || b16) {
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#if FASTLED_HD_COLOR_MIXING
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uint8_t brightness = mColorAdjustment.brightness;
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CRGB scale = mColorAdjustment.color;
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#else
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uint8_t brightness = 255;
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CRGB scale = mColorAdjustment.premixed;
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#endif
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if (scale[0] != 255) {
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r16 = scale16by8(r16, scale[0]);
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}
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if (scale[1] != 255) {
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g16 = scale16by8(g16, scale[1]);
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}
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if (scale[2] != 255) {
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b16 = scale16by8(b16, scale[2]);
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}
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if (brightness != 255) {
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r16 = scale16by8(r16, brightness);
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g16 = scale16by8(g16, brightness);
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b16 = scale16by8(b16, brightness);
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}
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}
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uint16_t rgb16[3] = {r16, g16, b16};
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const uint8_t s0_index = RGB_BYTE0(RGB_ORDER);
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const uint8_t s1_index = RGB_BYTE1(RGB_ORDER);
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const uint8_t s2_index = RGB_BYTE2(RGB_ORDER);
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*s0_out = rgb16[s0_index];
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*s1_out = rgb16[s1_index];
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*s2_out = rgb16[s2_index];
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}
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FASTLED_FORCE_INLINE void loadAndScaleRGBW(Rgbw rgbw, uint8_t *b0_out, uint8_t *b1_out,
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uint8_t *b2_out, uint8_t *b3_out) {
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#ifdef __AVR__
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// Don't do RGBW conversion for AVR, just set the W pixel to black.
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uint8_t out[4] = {
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// Get the pixels in native order.
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loadAndScale0(),
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loadAndScale1(),
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loadAndScale2(),
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0,
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};
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EOrderW w_placement = rgbw.w_placement;
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// Apply w-component insertion.
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fl::rgbw_partial_reorder(
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w_placement, out[0], out[1], out[2],
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0, // Pre-ordered RGB data with a 0 white component.
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b0_out, b1_out, b2_out, b3_out);
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#else
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const uint8_t b0_index = RGB_BYTE0(RGB_ORDER); // Needed to re-order RGB back into led native order.
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const uint8_t b1_index = RGB_BYTE1(RGB_ORDER);
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const uint8_t b2_index = RGB_BYTE2(RGB_ORDER);
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// Get the naive RGB data order in r,g,b order.
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CRGB rgb(mData[0], mData[1], mData[2]);
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uint8_t w = 0;
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fl::rgb_2_rgbw(rgbw.rgbw_mode,
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rgbw.white_color_temp,
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rgb.r, rgb.g, rgb.b, // Input colors
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mColorAdjustment.premixed.r, mColorAdjustment.premixed.g, mColorAdjustment.premixed.b, // How these colors are scaled for color balance.
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&rgb.r, &rgb.g, &rgb.b, &w);
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// Now finish the ordering so that the output is in the native led order for all of RGBW.
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fl::rgbw_partial_reorder(
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rgbw.w_placement,
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rgb.raw[b0_index], // in-place re-ordering for the RGB data.
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rgb.raw[b1_index],
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rgb.raw[b2_index],
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w, // The white component is not ordered in this call.
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b0_out, b1_out, b2_out, b3_out); // RGBW data now in total native led order.
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#endif
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}
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};
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FASTLED_NAMESPACE_END
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FL_DISABLE_WARNING_POP
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