419 lines
20 KiB
C
419 lines
20 KiB
C
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#ifndef __INC_CONTROLLER_H
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#define __INC_CONTROLLER_H
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///@file controller.h
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/// base definitions used by led controllers for writing out led data
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#include "FastLED.h"
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#include "led_sysdefs.h"
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#include "pixeltypes.h"
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#include "color.h"
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#include <stddef.h>
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FASTLED_NAMESPACE_BEGIN
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#define RO(X) RGB_BYTE(RGB_ORDER, X)
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#define RGB_BYTE(RO,X) (((RO)>>(3*(2-(X)))) & 0x3)
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#define RGB_BYTE0(RO) ((RO>>6) & 0x3)
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#define RGB_BYTE1(RO) ((RO>>3) & 0x3)
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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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#define DISABLE_DITHER 0x00
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#define BINARY_DITHER 0x01
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typedef uint8_t EDitherMode;
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// LED Controller interface definition
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//
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Base definition for an LED controller. Pretty much the methods that every LED controller object will make available.
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/// Note that the showARGB method is not impelemented for all controllers yet. Note also the methods for eventual checking
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/// of background writing of data (I'm looking at you, teensy 3.0 DMA controller!). If you want to pass LED controllers around
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/// to methods, make them references to this type, keeps your code saner. However, most people won't be seeing/using these objects
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/// directly at all
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class CLEDController {
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protected:
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friend class CFastLED;
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CRGB *m_Data;
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CLEDController *m_pNext;
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CRGB m_ColorCorrection;
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CRGB m_ColorTemperature;
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EDitherMode m_DitherMode;
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int m_nLeds;
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static CLEDController *m_pHead;
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static CLEDController *m_pTail;
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/// set all the leds on the controller to a given color
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///@param data the crgb color to set the leds to
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///@param nLeds the numner of leds to set to this color
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///@param scale the rgb scaling value for outputting color
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virtual void showColor(const struct CRGB & data, int nLeds, CRGB scale) = 0;
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/// write the passed in rgb data out to the leds managed by this controller
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///@param data the rgb data to write out to the strip
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///@param nLeds the number of leds being written out
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///@param scale the rgb scaling to apply to each led before writing it out
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virtual void show(const struct CRGB *data, int nLeds, CRGB scale) = 0;
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public:
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/// create an led controller object, add it to the chain of controllers
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CLEDController() : m_Data(NULL), m_ColorCorrection(UncorrectedColor), m_ColorTemperature(UncorrectedTemperature), m_DitherMode(BINARY_DITHER), m_nLeds(0) {
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m_pNext = NULL;
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if(m_pHead==NULL) { m_pHead = this; }
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if(m_pTail != NULL) { m_pTail->m_pNext = this; }
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m_pTail = this;
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}
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///initialize the LED controller
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virtual void init() = 0;
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///clear out/zero out the given number of leds.
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virtual void clearLeds(int nLeds) { showColor(CRGB::Black, nLeds, CRGB::Black); }
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/// show function w/integer brightness, will scale for color correction and temperature
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void show(const struct CRGB *data, int nLeds, uint8_t brightness) {
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show(data, nLeds, getAdjustment(brightness));
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}
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/// show function w/integer brightness, will scale for color correction and temperature
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void showColor(const struct CRGB &data, int nLeds, uint8_t brightness) {
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showColor(data, nLeds, getAdjustment(brightness));
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}
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/// show function using the "attached to this controller" led data
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void showLeds(uint8_t brightness=255) {
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show(m_Data, m_nLeds, getAdjustment(brightness));
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}
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/// show the given color on the led strip
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void showColor(const struct CRGB & data, uint8_t brightness=255) {
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showColor(data, m_nLeds, getAdjustment(brightness));
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}
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/// get the first led controller in the chain of controllers
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static CLEDController *head() { return m_pHead; }
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/// get the next controller in the chain after this one. will return NULL at the end of the chain
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CLEDController *next() { return m_pNext; }
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/// set the default array of leds to be used by this controller
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CLEDController & setLeds(CRGB *data, int nLeds) {
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m_Data = data;
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m_nLeds = nLeds;
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return *this;
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}
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/// zero out the led data managed by this controller
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void clearLedData() {
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if(m_Data) {
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memset8((void*)m_Data, 0, sizeof(struct CRGB) * m_nLeds);
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}
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}
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/// How many leds does this controller manage?
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virtual int size() { return m_nLeds; }
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/// Pointer to the CRGB array for this controller
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CRGB* leds() { return m_Data; }
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/// Reference to the n'th item in the controller
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CRGB &operator[](int x) { return m_Data[x]; }
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/// set the dithering mode for this controller to use
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inline CLEDController & setDither(uint8_t ditherMode = BINARY_DITHER) { m_DitherMode = ditherMode; return *this; }
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/// get the dithering option currently set for this controller
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inline uint8_t getDither() { return m_DitherMode; }
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/// the the color corrction to use for this controller, expressed as an rgb object
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CLEDController & setCorrection(CRGB correction) { m_ColorCorrection = correction; return *this; }
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/// set the color correction to use for this controller
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CLEDController & setCorrection(LEDColorCorrection correction) { m_ColorCorrection = correction; return *this; }
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/// get the correction value used by this controller
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CRGB getCorrection() { return m_ColorCorrection; }
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/// set the color temperature, aka white point, for this controller
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CLEDController & setTemperature(CRGB temperature) { m_ColorTemperature = temperature; return *this; }
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/// set the color temperature, aka white point, for this controller
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CLEDController & setTemperature(ColorTemperature temperature) { m_ColorTemperature = temperature; return *this; }
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/// get the color temperature, aka whipe point, for this controller
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CRGB getTemperature() { return m_ColorTemperature; }
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/// Get the combined brightness/color adjustment for this controller
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CRGB getAdjustment(uint8_t scale) {
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return computeAdjustment(scale, m_ColorCorrection, m_ColorTemperature);
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}
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static CRGB computeAdjustment(uint8_t scale, const CRGB & colorCorrection, const CRGB & colorTemperature) {
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#if defined(NO_CORRECTION) && (NO_CORRECTION==1)
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return CRGB(scale,scale,scale);
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#else
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CRGB adj(0,0,0);
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if(scale > 0) {
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for(uint8_t i = 0; i < 3; i++) {
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uint8_t cc = colorCorrection.raw[i];
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uint8_t ct = colorTemperature.raw[i];
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if(cc > 0 && ct > 0) {
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uint32_t work = (((uint32_t)cc)+1) * (((uint32_t)ct)+1) * scale;
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work /= 0x10000L;
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adj.raw[i] = work & 0xFF;
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}
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}
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}
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return adj;
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#endif
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}
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virtual uint16_t getMaxRefreshRate() const { return 0; }
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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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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;
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int mLen,mLenRemaining;
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uint8_t d[3];
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uint8_t e[3];
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CRGB mScale;
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int8_t mAdvance;
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int mOffsets[LANES];
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PixelController(const PixelController & other) {
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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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mScale = other.mScale;
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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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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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PixelController(const uint8_t *d, int len, CRGB & s, EDitherMode dither = BINARY_DITHER, bool advance=true, uint8_t skip=0) : mData(d), mLen(len), mLenRemaining(len), mScale(s) {
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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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PixelController(const CRGB *d, int len, CRGB & s, EDitherMode dither = BINARY_DITHER) : mData((const uint8_t*)d), mLen(len), mLenRemaining(len), mScale(s) {
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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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PixelController(const CRGB &d, int len, CRGB & s, EDitherMode dither = BINARY_DITHER) : mData((const uint8_t*)&d), mLen(len), mLenRemaining(len), mScale(s) {
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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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void init_binary_dithering() {
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#if !defined(NO_DITHERING) || (NO_DITHERING != 1)
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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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#define MAX_LIKELY_UPDATE_RATE_HZ 400
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#define MIN_ACCEPTABLE_DITHER_RATE_HZ 50
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#define UPDATES_PER_FULL_DITHER_CYCLE (MAX_LIKELY_UPDATE_RATE_HZ / MIN_ACCEPTABLE_DITHER_RATE_HZ)
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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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#define VIRTUAL_BITS RECOMMENDED_VIRTUAL_BITS
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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 = mScale.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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__attribute__((always_inline)) 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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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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__attribute__((always_inline)) inline int size() { return mLen; }
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// get the amount to advance the pointer by
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__attribute__((always_inline)) inline int advanceBy() { return mAdvance; }
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// advance the data pointer forward, adjust position counter
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__attribute__((always_inline)) inline void advanceData() { mData += mAdvance; mLenRemaining--;}
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// step the dithering forward
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__attribute__((always_inline)) 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];
|
||
|
|
d[1] = e[1] - d[1];
|
||
|
|
d[2] = e[2] - d[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
// Some chipsets pre-cycle the first byte, which means we want to cycle byte 0's dithering separately
|
||
|
|
__attribute__((always_inline)) inline void preStepFirstByteDithering() {
|
||
|
|
d[RO(0)] = e[RO(0)] - d[RO(0)];
|
||
|
|
}
|
||
|
|
|
||
|
|
template<int SLOT> __attribute__((always_inline)) inline static uint8_t loadByte(PixelController & pc) { return pc.mData[RO(SLOT)]; }
|
||
|
|
template<int SLOT> __attribute__((always_inline)) inline static uint8_t loadByte(PixelController & pc, int lane) { return pc.mData[pc.mOffsets[lane] + RO(SLOT)]; }
|
||
|
|
|
||
|
|
template<int SLOT> __attribute__((always_inline)) inline static uint8_t dither(PixelController & pc, uint8_t b) { return b ? qadd8(b, pc.d[RO(SLOT)]) : 0; }
|
||
|
|
template<int SLOT> __attribute__((always_inline)) inline static uint8_t dither(PixelController & , uint8_t b, uint8_t d) { return b ? qadd8(b,d) : 0; }
|
||
|
|
|
||
|
|
template<int SLOT> __attribute__((always_inline)) inline static uint8_t scale(PixelController & pc, uint8_t b) { return scale8(b, pc.mScale.raw[RO(SLOT)]); }
|
||
|
|
template<int SLOT> __attribute__((always_inline)) inline static uint8_t scale(PixelController & , uint8_t b, uint8_t scale) { return scale8(b, scale); }
|
||
|
|
|
||
|
|
// composite shortcut functions for loading, dithering, and scaling
|
||
|
|
template<int SLOT> __attribute__((always_inline)) inline static uint8_t loadAndScale(PixelController & pc) { return scale<SLOT>(pc, pc.dither<SLOT>(pc, pc.loadByte<SLOT>(pc))); }
|
||
|
|
template<int SLOT> __attribute__((always_inline)) inline static uint8_t loadAndScale(PixelController & pc, int lane) { return scale<SLOT>(pc, pc.dither<SLOT>(pc, pc.loadByte<SLOT>(pc, lane))); }
|
||
|
|
template<int SLOT> __attribute__((always_inline)) 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); }
|
||
|
|
template<int SLOT> __attribute__((always_inline)) inline static uint8_t loadAndScale(PixelController & pc, int lane, uint8_t scale) { return scale8(pc.loadByte<SLOT>(pc, lane), scale); }
|
||
|
|
|
||
|
|
template<int SLOT> __attribute__((always_inline)) inline static uint8_t advanceAndLoadAndScale(PixelController & pc) { pc.advanceData(); return pc.loadAndScale<SLOT>(pc); }
|
||
|
|
template<int SLOT> __attribute__((always_inline)) inline static uint8_t advanceAndLoadAndScale(PixelController & pc, int lane) { pc.advanceData(); return pc.loadAndScale<SLOT>(pc, lane); }
|
||
|
|
template<int SLOT> __attribute__((always_inline)) inline static uint8_t advanceAndLoadAndScale(PixelController & pc, int lane, uint8_t scale) { pc.advanceData(); return pc.loadAndScale<SLOT>(pc, lane, scale); }
|
||
|
|
|
||
|
|
template<int SLOT> __attribute__((always_inline)) inline static uint8_t getd(PixelController & pc) { return pc.d[RO(SLOT)]; }
|
||
|
|
template<int SLOT> __attribute__((always_inline)) inline static uint8_t getscale(PixelController & pc) { return pc.mScale.raw[RO(SLOT)]; }
|
||
|
|
|
||
|
|
// Helper functions to get around gcc stupidities
|
||
|
|
__attribute__((always_inline)) inline uint8_t loadAndScale0(int lane, uint8_t scale) { return loadAndScale<0>(*this, lane, scale); }
|
||
|
|
__attribute__((always_inline)) inline uint8_t loadAndScale1(int lane, uint8_t scale) { return loadAndScale<1>(*this, lane, scale); }
|
||
|
|
__attribute__((always_inline)) inline uint8_t loadAndScale2(int lane, uint8_t scale) { return loadAndScale<2>(*this, lane, scale); }
|
||
|
|
__attribute__((always_inline)) inline uint8_t advanceAndLoadAndScale0(int lane, uint8_t scale) { return advanceAndLoadAndScale<0>(*this, lane, scale); }
|
||
|
|
__attribute__((always_inline)) inline uint8_t stepAdvanceAndLoadAndScale0(int lane, uint8_t scale) { stepDithering(); return advanceAndLoadAndScale<0>(*this, lane, scale); }
|
||
|
|
|
||
|
|
__attribute__((always_inline)) inline uint8_t loadAndScale0(int lane) { return loadAndScale<0>(*this, lane); }
|
||
|
|
__attribute__((always_inline)) inline uint8_t loadAndScale1(int lane) { return loadAndScale<1>(*this, lane); }
|
||
|
|
__attribute__((always_inline)) inline uint8_t loadAndScale2(int lane) { return loadAndScale<2>(*this, lane); }
|
||
|
|
__attribute__((always_inline)) inline uint8_t advanceAndLoadAndScale0(int lane) { return advanceAndLoadAndScale<0>(*this, lane); }
|
||
|
|
__attribute__((always_inline)) inline uint8_t stepAdvanceAndLoadAndScale0(int lane) { stepDithering(); return advanceAndLoadAndScale<0>(*this, lane); }
|
||
|
|
|
||
|
|
__attribute__((always_inline)) inline uint8_t loadAndScale0() { return loadAndScale<0>(*this); }
|
||
|
|
__attribute__((always_inline)) inline uint8_t loadAndScale1() { return loadAndScale<1>(*this); }
|
||
|
|
__attribute__((always_inline)) inline uint8_t loadAndScale2() { return loadAndScale<2>(*this); }
|
||
|
|
__attribute__((always_inline)) inline uint8_t advanceAndLoadAndScale0() { return advanceAndLoadAndScale<0>(*this); }
|
||
|
|
__attribute__((always_inline)) inline uint8_t stepAdvanceAndLoadAndScale0() { stepDithering(); return advanceAndLoadAndScale<0>(*this); }
|
||
|
|
|
||
|
|
__attribute__((always_inline)) inline uint8_t getScale0() { return getscale<0>(*this); }
|
||
|
|
__attribute__((always_inline)) inline uint8_t getScale1() { return getscale<1>(*this); }
|
||
|
|
__attribute__((always_inline)) inline uint8_t getScale2() { return getscale<2>(*this); }
|
||
|
|
};
|
||
|
|
|
||
|
|
template<EOrder RGB_ORDER, int LANES=1, uint32_t MASK=0xFFFFFFFF> class CPixelLEDController : public CLEDController {
|
||
|
|
protected:
|
||
|
|
virtual void showPixels(PixelController<RGB_ORDER,LANES,MASK> & pixels) = 0;
|
||
|
|
|
||
|
|
/// set all the leds on the controller to a given color
|
||
|
|
///@param data the crgb color to set the leds to
|
||
|
|
///@param nLeds the numner of leds to set to this color
|
||
|
|
///@param scale the rgb scaling value for outputting color
|
||
|
|
virtual void showColor(const struct CRGB & data, int nLeds, CRGB scale) {
|
||
|
|
PixelController<RGB_ORDER, LANES, MASK> pixels(data, nLeds, scale, getDither());
|
||
|
|
showPixels(pixels);
|
||
|
|
}
|
||
|
|
|
||
|
|
/// write the passed in rgb data out to the leds managed by this controller
|
||
|
|
///@param data the rgb data to write out to the strip
|
||
|
|
///@param nLeds the number of leds being written out
|
||
|
|
///@param scale the rgb scaling to apply to each led before writing it out
|
||
|
|
virtual void show(const struct CRGB *data, int nLeds, CRGB scale) {
|
||
|
|
PixelController<RGB_ORDER, LANES, MASK> pixels(data, nLeds, scale, getDither());
|
||
|
|
showPixels(pixels);
|
||
|
|
}
|
||
|
|
|
||
|
|
public:
|
||
|
|
CPixelLEDController() : CLEDController() {}
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
FASTLED_NAMESPACE_END
|
||
|
|
|
||
|
|
#endif
|